Bought a couple of these now. An 8GB and a 16GB mainly for work. After 3 years, the 8GB is starting to show signs of wear. The cap is loose and it crashed losing all the data recently, but after reformatting, works fine again. The 16GB, which I've had for 2 years, still performs brilliantly, good data transfer, no issues with being recognised by any computer it is inserted into and very durable. After 2 years, the connector is wearing and becoming loose, however, it is used daily and is often "borrowed" by students, who need to save work, so has had a lot of hammer and abuse in this time.
I'm pleased to report it handles this well and despite looking cheap and fragile, it really is up to the job and surprisingly tough.
I've had a few different usb sticks in the past, from Dan Cruzers to Data travelers, but this is by far the best make. Recommended thoroughly. I'll be ordering the 32GB one next.