For well under a fiver at the time of writing (July 2012) this is excellent value for money, I think. Reliable so far when used with Windows XP and 7.
Two drawbacks, though:
(1) Like all modern USB drives, MP3 players, etc., this is not the stated size. Even allowing for the fact that the makers have, again, forgotten that you divide by 1024 (and not 1000) to convert from Bytes-kB-MB-GB-TB-etc., it's actually even less than you'd expect. It's stated to be an 8GB drive but it's actually 7.21GB. That's works out to a whopping 818.7MB shortfall! So long as you're aware of this and know 7.21GB will be enough for you then it's still good value for money (just a bit more misleading than usual!).
(2) The device comes with a stack of software pre-installed -- the annoyingly-named "urDrive" suite comprising music player, web browser, etc. This might be interesting for some, but as most of us will be running these devices plugged into machines with their own players, browsers, etc. and want to claw back some of the space we've been short changed on in the first place, I expect most people will remove it straight away. (By the way, don't bother running the uninstall executable -- just delete it all and have done!)
This review sounds negative but that's not really the intention. If you want a 7.21GB USB stick for under a fiver and don't mind spending a little time deleting some next-to-pointless software before using it for the first time, then this is worth it!