This flash drive looks alright, not the best looking flash drive I have seen on Amazon, but good enough. It's built very well as you would expect for the money and brand, and you do get what you pay for with electronics.
As for performance, when I transferred film it averaged 70-75 MB/sec (took 60 sec to send several gig), small files around 30-35MB/sec. Not super fast, but quick enough.
Not that worried as USB 2.0 you would be waiting a fair amount of time.
If you want a good, fast, USB 3 flash drive, then this isn't bad for the money, you do get a good deal, tenner less and the get the next best thing- Transcend 32GB JetFlash 700 Super Speed USB 3.0 Drive. If you want even faster then you are looking at £80-£90 for the Kingston Technology 64GB USB 3.0 DTHX Flash Drive, very fast and more memory.
Depends if you like to have lots of space @ fast speeds-then pay the extra, if just want something that works go for the cheaper option.
UPDATE 24/07/2013: Kingston Technology 64GB USB 3.0 DTHX Flash Drive is now even less (around £51+) so even better value per GB.