Summary: Overall a decent and compatible memory stick. However it lacks write performance and (around 15-20MB/s average). This is as advertised so I can't really ding it for that. The lack of a key ring and or simply connection to hold the cap makes it pretty easy to loose.
Pros: Good read performance (60-80MB/s avg), stylish, nice finish, and light. Compatible with OS X (10.8), and Windows 7 (x64) as boot volumes. So far, reliable.
Cons: Write performance is not good at all - Almost USB 2.0 speed. Has a separate cap with no way to attach to unit making it easy to loose. There is no place to easily add to a key ring - it only has a small hole in the corner suitable for a thread.