Sony pen drives are trusted as a brand and they do quite live up to the brand value. However there are a few design flaws in some products such as the slider button stops functioning after some time and you have to hold it so it doesn’t go back in the shell. Speed is good at first but they tend to drop their transfer speed after some time which is quite common among pen drives. The ruggedness of the actual drive unit is remarkable. Its a good buy overall, you will not regret it at least for an year.