Pros: Built in USB. Quick off PC charge. Size.
Cons: Poor instruction manual. Poor customer service policy.
I placed an order when they first came out. I paid $149. five weeks later they dropped the price $40. Since it is more then 30 days they will not make an adjustment.
I liked the internal USB. Size was good. Lack of a good instruction manual (even the one off the web) required a lot of experimentation to use it properly. They do not even tell you how to turn it off. The fact that you can quickly charge it off your PC is neat.