I have the stick received yesterday from amazon.co.uk and also tried the same. The build quality is okay, the housing is completely made of plastic and seems quite stable. Whether this impression is confirmed to continue to show the future ... The U3 software problems started when the first plugging in the sticks, but that seems to be a stroke of luck, because some of the reviews on the also available from Amazon "Sandisk Cruzer Micro U3 4GB "(without the addition ReadyBoost) called problems with the U3 function. Just to be on the safe side, I have because of the negative reviews for U3 software, this easy walk (there it on the SanDisk site a program to download), and I already on other USB sticks used software "Portable Apps Suite "installed on the stick. This is free and works with the SanDisk flash drive without any problems. But back to the stick: The stick is quite fast, even a little faster than the 1GB Kingston flash drive I've used so far. There are certainly still faster (and more expensive) models, but for my needs ranging from the performance offered completely. I can really recommend this stick and was only therefore only four points, because the really useless U3 software to pay for another and their distance from the stick takes some time to complete.