I have a few dodgy low memory USB 2 flash drives, and would like to buy a new one as the price has come down a lot! But I don't know which one I should buy.. I would like a 64GB/32GB memory stick, preferably 64GB. I would also like to have quite quick read/write speeds as my current USB sticks, are VERY slow. Most websites don't seem to include this information though. I would like to buy from Amazon, and don't want to spend over £25 really. What do you recommend?