Have you used both? (not trying to be a prick, just an honest question). They are night and day. Granted, the offline maps is nice, but OVI maps is pretty limited and far from cleanly implemented. Google navigation is very clean, polished, and functional; it is just limited by the offline capability. Though, it should be noted that OVI maps can't route offline (I think... someone can correct me. The software is far to painful and limited to use at this point. High hopes for the future?)