Pros: Nice drive once you remove the U3 features from it. Very fast. Fairly compact. Retractable USB plug is nice. Nice orange glow when plugged in.

Cons: Cheap plastic casing. Feels flimsy. Not nearly at durable as the Cruzer Titanium that I'm upgrading from. I hope I don't step on it.

Pros: Nice case design. No cap to loose. I like the U3, particularly the Skype client.

Cons: Troublesome driver software 1. It failed on my XP machine because Nero was installed. (I wasted a lot of time until I found it was incompatible on their website.) 2. It locks up the computer when I try to access a large file like a truecrypt volume. This works fine on my other non U3 USB drives. 3. It failed on my Vista Ultimate laptop and says the version of windows is not supported for U3. It attempts to install an update from their website but in the end the upgrade failed. The only help it gave me was to contact my system administrator. My system administrator: (that would be me), suggested I send it back and get something that works.

Overall Review: The U3 feature is nice from what I saw but with the compatability issues it was of no use to me. If you are lucky enough not have the specific conflicts (above) like I did, It may work for you.

Pros: 4GB USB Drive, 4x the size of my 1GB Micro drive

Cons: It is so slow. It is open ended and any dirt or lint in the pocket easily finds it's way in to the drive. You can dump the U3 software and stop it from auto installing as it presents two drives, one looks like a CD. So if you hold down SHIFT while you insert, it will not run. Then simply run the removal software at Sandisk website file support area.

Overall Review: I have a 1GB micro Cruzer. I copied off the 989MB of files to my Harddisk (7200RPM, 8ms, 2MB Buffer). I formatted the 1GB micro Cruzer, and copied the 989MB to it within latest updated version of WIN XP Pro. Took 6:32. Format and copy the same 989MB to the 4GB Micro Cruzer and it took a whopping 11:13. That is pretty close to 1/2 the speed.For $129 I am sorry I purchased this. I really figured if the 1GB Micro Cruzer was excellent compared to other 1GB of it's type, it is natural to believe their new product will be built with similar speed memory. Not so. If you are a busy professional and you don't have lots of time to spare, buy something else. My 1GB contains my Roboform passwords, my greatnews news reader (so when I go home I don't have to read duplicate RSS feeds. I just pop the USB in the drive and launch RSS reader and piuck up where I left off. I also have my Outlook files on the drive for the same reason. My email was so slow I had to revert back to disk. I hate it

Pros: I like the retractable connector, good price/capacity ratio.

Cons: U3 locked up my PC. Had to reformat the drive with a utility downloaded from sandisk. Can only reformat on a computer that the U3 software does NOT cause to lock up.

Pros: I bought this drive because of the design, which is great. Most other pen drives have a removable cap, which I'm guaranteed to lose, but with this one, the usb plug slides in and out of the chassis, which is perfect.

Cons: No joking, I plugged this pen drive into my new Dell XPS 410 machine and it immediately BSODed. I tried again after a reboot and it did the same thing. Getting rid of the U3 system was a bit tricky because it shows up as a separate partition.

Overall Review: Going along with the cons, getting rid of the U3 was a bit tricky, but there is an executable, either on the drive or from SanDisk's website that will remove the U3 "partition"

Pros: Capacity, price, SanDisk quality, retractable

Cons: U3 software (removable), plastic case feels cheap

Overall Review: Although the U3 software is removable, it's an extra step I would prefer not having to go through. This is my third SanDisk stick. I also have a 512mb and 1gb Cruzer mini sticks. I love SanDisk products! Also, I read somewhere while researching this product that you can coat the case with super glue to make it stronger. Just be careful not to get any on the internal components.

Pros: U3 is removable with the u3 uninstall utility. 4 gigs of space, simple compact design, orange LED to let you know its connected

Cons: U3......IMO it sucks. But as I said above, it IS removable, so no worries.

Overall Review: Worstbuy wants 150 for this same item.

Pros: U3 is awesome perfect for when you primary machine is having issues

Cons: none