I've always been a Kingston user for the longest time, but I hate them because they're so slow. I only get them because they're so cheap. But now that speed matters, I bought a different one.
I LOVE this usb key. I bought it today for only 27 dollars, was on sale. It's USB 3.0, and it's FAST. I just tried it on my USB 2.0 ports and the speed was amazing -
I got 12-18MB/sec write speed. I haven't tried it in a 3.0 slot yet, but I'm sure the speed will double, triple, or even quadruple.
The only problem that I've heard from people is that the srping that holds the usb when it's being used can break easily so I must be careful with it.