I did a lot of searching and reading of customer reviews before buying the Kingston 8GB USB Data Traveller drive; my primary focus was on the price. Now that I've used it and compared the write speed to my older Corsair Flash Voyager 4GB drive, for which I needed a back-up, I'm very disappointed. Twice a week I move 8000+ files of around 285K in size to a USB drive for distribution to additional computers (I don't have and I don't want a home network at this point). The total space required is 2.34 GB. My Corsair 4GB drive takes about 12 minutes to complete the transfer. This newer, larger Kingston drive took 18 minutes--about 50% longer.
When I'm doing this operation or transferring the files to other systems it's helpful to see the LED light blinking while I'm working on a different computer, so I can know when the operations are complete. The Corsair Flash Voyagers I have (a 2GB and a 4GB) have excellent, bright LED activity lights that flash near the end of the drive so you can see the activity even if there's another USB drive located above. The Kingston's LED activity light by contrast is a very dim green one located close to the computer end of the drive, and I can't really see it in a brightly lit room. I've read many customer reviews of this drive and didn't see another one point this out.
So, I've just bought a device here which will serve only as a back-up in case the other one fails, but which I don't plan to use regularly at all. At this point I wish I'd picked up another Corsair for a few dollars more.