Summary: I got the 8GB as a gift just over a year ago. It worked great, learning to check the usb direction took some getting used to but happens with any usb I guess, just frustrating that after crawling under a dark desk and plugging it in only to find oops wrong direction.
Pros: * Pretty fast. * Works great in usb slots that are damaged since you can press it slightly at an angle to hit the pins if the pins are worn out and flattened.
Cons: * Plugging it in backwards is annoying. * Easy to lose in your pocket, I kept mine in a small altoids size tin. * Not very durable after 12 months of daily use.
Summary: Nice to have on your keys, but not a replacement for a full sized USB drive.
Pros: -Tiny! -Cheap
Cons: -Tiny! Mine didn't come with a keyring small enough to fit, hope you have one or you might lose this guy! -No status LED. Not too bad for small files, but if you are copying a Win 7 ISO for example, you might want to remember you have it going.