I bought this on price alone (22 pounds, free delivery) because 64Gb seemed excellent for that price.
The device feels well made (mine is silver) and operating it from dot was simple and hassle-free. I'm using it mainly as a back-up for images and videos, and while it has served that purpose well with about 55Gb on board, the write speed seemed very slow. Generally it was about 4Mb per second for images and 7Mb per second for video, this wasn't exactly a problem but it seemed to take ages. Once done it's fine and it has been used on a number of different laptops (Sony Vaio, Fujitsu, Acer and LG) with no read problems at all. It's often used on a PS3 as well, again no problems to report. Have not experienced any data corruption, but if that changes I'll update this. If there's no update, that means it's still fine.
Good value, still, but those snail-like write speeds might annoy or inconvenience some. The words 'High Speed' in the product title are misleading in my view.