The Pioneer looks nice, Alpine does one too. The BMW one is very outdated in my opinion, most newer gps will give you trafic information in real time which if you live in a big city is a great feature... Have you considered mobil gps as well such as the TomTom GO, the Magellan Roadmate or the Garmin StreetPilot, they cost about half much, have all the new features(trafic info, bluetooth, etc...) and you can take them from one car to another...