PetAT: I have set my mind on the Garmin, most likely a 1350 or better. I gave up on TOMTOM since they come with a factory mount that us not removable.
Another black mark on the tom tom, is that the windscreen mount is reall flimsy and and easy to break when you remove it. It has this screw suction thing, and often when you unscrew it to release the suction the whole thing just falls apart. I did however like the tomtom interface, as it was easy to use, but most probably have similar interfaces now.