This brand is not very good... i got a smaller one from asda a while back and it did not last that long, keeps asking me to format it... but it never works.
For that reason alone i would not spend the money even if they cost less then £10...
I think the best ones to buy in the high street are the KINGSTON Data traveller ones from staples (I think pcworld might sell them also but pcworld tends to be more expensive normally), these are extremely fast, good to use as superfetch feature in windows vista or windows 7.
I got 3 (8gb) data traveller ones and they have lasted a long time so far.

The kingston one allows the usb to retract, which might be why they last longer also.
Price wise the 8gb were a bargain i think less then a tenner at the time of purchase but the 16/32gb are bit more expensive then this asda one... so imo i think might be worth looking out there on the web for any kingston data traveller offers then buy something that will not last.
...actually if you buy one keep the receipt for when it goes wrong
