Summary: My second one of these after using the first for about 6 months. It gets tossed into my laptop bag for travel and has never skipped a beat. My ports are all USB 2.0 and access speed is on par with my flash drives. I've recommend these (and the 2tb ultras) for anyone needing portable backup storage.
Pros: No extra power connector/brick, reasonably fast, quiet, cool running.
Cons: Could use a longer USB cable and/or a plain old mini/micro USB cable. The USB committee is creating way too many "standard" cable ends.