I am relatively happy with this usb key. We all loved it when we first opened it, smooth to the touch, cute as a battery, sleek and colourful (so easier not to lose). The aesthetic design and the actual performance (so far) are impeccable. However, after only a few uses the sliding in and out (which was a brilliant feature, because it meant not losing a cap) got stuck, so that sometimes you have to jiggle it to slide in, and other times bits get removed that shouldn't, and you have to click them back on.
I don't regret getting it, but it could do with some looking at to make it smoother in its operation.