Overall Review: I'm not exactly a PSU connoisseur, but this has done the job for me with no issues for the last 1-2 years.

Pros: Gold efficiency, modular, near silent, reliable.

Cons: Some cords like the 24 pin connector may be a tight fit in larger cases or awkward positions on the motherboard.

Overall Review: I've had 3 of these in my builds for 1-2 years and they're all working fine. If I were to build for my friends I would probably pick up another one of these.

Pros: - Reliable
- Seasonic 10 year warranty
- Comes with a bag of cable ties and extra wires
- Easy to install

Cons: - Slow Rebate Process
- Not Fully Modular

Overall Review: Had this power supply for over a year, haven't run into any hiccups, coil whine, loss of power, or anything of the sort. Love seasonic, and will continue to buy their power supplies over anyone else!

Pros: * Provides adequate power
* Very quiet
* Reliable

Cons: * Only 650W

Overall Review: Bought in Nov 2015, and continues to work fine, though I may retire this computer in favor of another build. If I can get away with reusing this PSU I may just do that.

Pros: -Seasonic brand is always quality.
-80+ gold
-hefty 650 watts is good for pretty much all single-gpu systems

Cons: -No fully modular. I didn't realize this when I ordered, but it doesn't bother me enough to take a star off for. The Corsair Carbide case that I was using for the install has a bottom that covers the PSU, so the extra cables are not visible.

Overall Review: I've had other brand's PSUs burn up on me, and leave me in a lurch while waiting for RMA. Luckily I've never lost components, but I knew it was only a matter of time, so I now look for quality over price. Can't go wrong with Seasonic.

Pros: *No more permanent wires than are necessary.
*Runs cool and has a quiet fan.
*Delivers stated power.
*Reasonable price.

Cons: *None, provided there are no unpleasant surprises in the next few years.

Overall Review: Nifty Seasonic case badge and velcro straps.

UPDATE 3/3/19: Still works perfectly. I'll be upgrading my system soon, but I plan to continue using this PSU in an HTPC. Fantastic product.

Pros: - Just a good PSU, good quality, no issues in almost 5 yrs.
- I don't think I've ever heard any fan noise coming from this PSU in 5 years.. whisper quiet

Cons: - none

Overall Review: *knock on wood* hopefully this PSU stays strong for years to come still, not go kaplunk after me writing a very positive review like life goes sometimes..

This PSU was running a desktop with:
Intel Core i5 4670K overclocked to 4.3Ghz
AsRock Z87 Fatal1ty Killer
16GB DDR3 memory
Gigabyte Windforce GTX770 2GB
Samsung 840 Pro SSD
2x 1TB HDD in RAID 0

I was building a new gaming computer, and was upgrading the above rig with a spare 4770k and more HDDs to use as a media server and thought of the PSU, so writing a review on it 5 yrs after this rig was built :)

Pros: Semi modular design means the 24 and 8-pin power are not modular but since every motherboard requires them then it is a no-brainer to have them NOT modular.
Many power cables to allow for many video cards, drives, etc.
Quiet operation and looks good.

Cons: I do not know if it was me or the PSU but the non-modular 8-pin cable did NOT work with the CPU power slot on my motherboard. I had to plug in a separate 8-pin power cable to use for the CPU power slot. No big issue there but then the PCIe non-modular cable did not work with my video card, I had to plug in another PCIe cable into the modular PSU to get the video card to work. Bummer the non-modular 8-pin CPU power cable and the PCIe cables do not work. Just have to shove them in the back of my case cause I cannot do anything else with them.