Bought one of these around 18 months ago when they were on sale. Since then have not looked back. It's been through the washing machine twice and still works perfectly fine. The capacity is enough as I have all my Uni work on it and still plenty extra if/when I want to move files between computers.
Transfer speeds are great (for larger files) and it's not bulky at all ... which is good as I tend to lose small things anyway.
And as an added bonus, you can quite easily throw them off walls and not experience any problems (and yes, I have done that).
Well worth 27 quid.