I bought (for friends) for more than 10 of these sticks and so far everything has always worked great. With the speed I'm satisfied (letter about 30 MB / sec, reading almost 100 MB / sec - according to Windows specifications). But what I find most important: So far I have not had any dropouts or other problems and I think that in USB sticks always the most important. (I've already done or ;-)) Would I buy again