I have the "small" red key 16GB: excellent and distinguished design. USB3 therefore, promises, things due: good read and write speeds (up to 42 MB / s write on my PC, no score as high as what others have observed). A good point: you can "clip" the cap on the back of the key to avoid losing, it's pretty damn good and it takes a lot. Besides the cap fits comfortably in "normal" position on the key and not likely to travel in the pocket (at least for now). One small problem: there is no activity light. Finally the price seems very competitive.