I have had great luck with Kingston drives, but this series (I have a 128GB as well) are lemons. The read/write speeds are really slow, and when you start a write or a file save it takes so long to get going I often get a "drive not found" error and have to try again.

This is my second Kingston 32gb Micro 3.1 usb. It is sturdy and fast. So far, no issues. Definitely recommend.

It was a great price for a large capacity USB data stick. Small size means it fits easily into wallet. Only (slight) snag is that the small size will probably mean I manage to mislay it ! But I've attached a keyring fob to it just in case.

Offers fast USB 3 data transfer, and has a quality construction. I bought it with the intention of having it on my keyring, so it's always with me. My only complaint is that it's maybe 1cm too short; with other keys on the keyring, it can be fiddly trying to plug it in to a computer.