If you need larger storage size and really appreciate speed, this is an awesome device. If you need a pocket sized flash drive you don't even need to consider this.
Very quick; Consistently getting 40 - 46MB/s write speeds; File sizes ranging from MP3 (3-8MB) through large bluray rips (12GB+); Larger files sustain higher speeds but thats consistent of all media Build quality seems great and the rubber coating seems very robust
Large; Very Large; approximately 4 inches long and much more thick then a normal flash drive; If you want to keep it in your pocket all the time, get something else as you very likely would break this Reliability.