Powermap 10 Does Anyone Use This On Thier Gps

Hi i'm looking at a Gps unit at the moment that uses Powermap10 the twz tt35 from telewiz shops. i think this is the same as the map on the Mio units but not sure.

question is any one using this map, whats it like, can you pre-route on your computer etc. Any feed back would be good.

Thanks Allan