Pros: Small size and 'potential"

Cons: Error screens and BSOD despite BIOS upgrades, settings changes, memory changes and disk changes. I've come to the conclusion that it is the NUC HW.

Other Thoughts: I've owned two earlier generation NUCs--I'm predisposed to love'em, but I'm inclined to think this is one to avoid. I'd be willing to try another unit, but not sure after reading horror stories on this and Intel forums...

Pros: It's small and quiet.

Cons: Looks like the bundle I got with this had incompatible memory. Thanks for wasting my time. Would have purchased it some where else. No weary of all newegg bundles.

Pros: Small compact size, both M2 SSD slot and 2.5" SATA slot which I liked. Easy to take apart and assemble. Solid build.

Cons: (Update 3/25/2016)
I returned the old kit with Avexir memory, and ordered the kit with Kingston memory. I noticed many reviews complaining about Avexir on newegg, and the Intel web site just updated users reported Kingston is good.

The new kit arrived actually with a free stick of Avexir as well, I assume Newegg was just throwing them away. As experiment, I tried Avexir again, and got the same errors as before. Then I installed Kingston, everything was good. No issue at all.

Upgrade from 1 egg to 5 eggs. Refund was easy and prompt.

(old review:)
Ordered the bundle with Avexir 8GB memory plus a separate OCZ Trion 150 120GB SSD. A ton of different errors and blue screens during install when I tried both Win8 and Win10. Tried at least 15 times. "IRQ not less or equal", "page fault in nonpage area", "critical structure corruption", "0xc0000005 error", etc. Just not usable. Giving up, will get a refund.
Not sure if it is the memory or the actual PC, most likely not the SSD.

Pros: - Very small and low profile. I put it in my closet.
- Very fast, good specs at a very reasonable price
- I installed Ubuntu Linux on this thing without any issues. Intel is known for great Linux support and it shows
- USB 3.0, 1 Gbit Ethernet, and AC wireless adapter make this tiny PC a great media device. I'm running Plex on it and is able to transcode 1080p video without any issues.
- Very easy to upgrade components and connect additional peripherals.

Cons: - Can't get it to connect to the internet from the BIOS, so it seems updating from the BIOS is out of the question. I'm hoping this will be fix in the next BIOS update.

Other Thoughts: - For the price and specs, you can hardly do better.

Pros: "Intel" suppose to be best in the industry. 4" x 4" x 2" dimensions. hdmi and display port great for home media. skylake. .usb 3.0, intel hd 520 graphics.

Cons: When I purchased I looked for a QVL for the ram. None was found. I assumed newegg would give me ram that would work, I guess it was more of a participation medal that you bought it. Like good job you twit. here's some ram for your trouble that don't work. Ok. one was DOA. It gave me a post once and black screened. no bios upgrade was even attempted. Blue power light did not work at all. I went with samsung 850 evo ssd's . Installing ssd's into the provided ssd adapter cage, takes an act of congress, it's not fluid you have to literally push down while sliding so the mounting holes will line up correctly. that feels forceful to me. newegg did great on the return and shipping me a replacement promptly. the "gift" Avexir memory is not working with this unit. I contacted support and told them please update and change this as you will have plenty others with the same issue. After the QVL came out Kingston Hyper X was not on the qualified list. so, everyone was saying the 8gb or 4gb worked. i chose the 8gb had hynix chips on the module. fine . first boot up. no problems no faults, no erros, no memory management nothing. windows installed flawlessly. updates drivers everything took around 37 minutes to complete installation and updating. I did check the heatsink and smelled for electrical burn smells on the DOA, however there was no smell and the only thing i can think of is there is some kind of short or grounding issue causing problems, as the blue power light not working and no video and nothing but the fan. flash update for corrupted bios didn't work as well.

Other Thoughts: intel shouldn't rely on their customers to fix their issues and find out what's wrong. Yes it is good to have forums, where I found most of the problems I had, but if you put out a good product you wouldn't have the issues in the first place. I did notice 2 things, now thermal paste is suppose to spread, but, the amount of thermal paste on these units are ridiculous like a kid fingerpainting globs on a piece of paper, to the point where it's not effective. due to modern processor normal operating temperature works within the threshold and auto shuts off if it is too hot. i turned the fan speed up in the bios to 65%. and I noticed an area within the bios to change and manage your memory settings. I was too busy and spent the majority of my time on these systems, I have a theory and it's just curiosity if you were to install the Avexir memory, and use the settings of the hyperX or another working ram module. would this help the people who received the Avexir memory. Although I wouldn't trust it because i tried to alter the settings anyway but no stable outcome.. anyone got 3 hours of braveness?

Pros: Small. And I mean ** small **. It's about the size of a paper napkin and a few inches high. Silent. Easy to get going even if you don't download the drivers beforehand. I am really impressed at how fast this processor is when using an SSD; much faster than I expected.

Cons: None that I see. I strongly recommend using an external USB DVD drive if you're not familiar with creating a bootable Windows install USB drive to load Windows.

Other Thoughts: When I put this together, I checked with the Intel website for recommended RAM to use. I purchased two O8GX4M2A2133C15 modules and installed them and an SSD. Viola! It booted right into BIOS. I loaded Windows 8 from a USB stick in about two minutes and was off and running. Some time later, my free Windows 10 download was installed and I was very pleased. Once you can connect to a network, you can download and install a program from Intel that will automatically check for other drivers you need. Also, the BIOS needed updating, and that turned out to be very easy.

To get Windows 10 for free you need to have Win 7 or 8.1 installed. I tried to load Win 7 and as a previous reviewer stated, once the install screen was displayed I had no mouse or keyboard, even when cabled. So I don't recommend trying to use Win 7.

Overall I can't say anything bad about this. If you use RAM recommended by Intel I don't think you would have any problem. I debated whether to purchase the i3 or the i5 machine and I really think the i3 would suit 75% of users. It's plenty fast enough for my purposes.

Pros: Love the SD card slot

Cons: Does not work with the free 8GB Avexir SODIMM. Had to pick up some Crosair CMSX8GX4M2A2400C16 locally and works great afterward.

Bought 2x units,
1 unit has some mechanical tolerance issues between one of the shoulder mounting screws, bottom 2.5" HDD carrier/cover , and the top PCB/sheet metal assembly. Returned 1 unit.

Other Thoughts: Does not use the free 8GB Avexir SODIMM with the 6th Gen NUC.

The power LED indicator is no longer on the power switch itself like the previous 2 generations of NUC.

Pros: Works fine so far after switching to different RAM.

Cons: Did not work with bundled Avexir DDR4 RAM. Had to switch to Kingston HyperX. There appear to be several on-going issues with the NUC6. Google "Intel NUC forum" for details.

Pros: none, waste of time

Cons: getting memory errors and cannot install windows 10. research is showing its finicky about memory.
ordering memory direct from intels support page of supported memory sticks.
hopefully this will work

Other Thoughts: very disappointed that newegg throws in free memory, which made is a really compelling price, but the memory is useless and now Im spending more money on better memory, and the "deal" wasn't worth it.

update: installed new memory straight from intels supported memory model list for this NUC, and it still has 3 flash-bad memory post. Further research on intels site has lots of feedback that many people are having unresolved memory issues. I'm returning this having wasted a week of debugging for what should have been a 1hr install to get someone a decent simple machine.
1) newegg should test their "bundles" before selling.
2) intel should test their supported HW list.
3) I bought intel because I thought I was getting a very stable platform straight from the source, never again.

Pros: None yet.

Cons: This was dead on arrival for me. I elected to send it back to Intel rather than return it to Newegg. I couldn't get anything to display on the monitor during bootup (and yes I was using the free newegg memory that isn't compatible). I am hoping to get one that has been tested (don't have the replacement yet). I have ordered the Kingston memory since everything I've read says that the free memory that Newegg is offering does not work with this unit.

Other Thoughts: I'll update this review if I have anything good to say when the replacement gets here. For now, it appears that you are better off with the previous generation of these NUCs.