I went with the Pioneer F-700 for two reasons. First, I didn't want to pay extra for bluetooth. Thought that was a bit of a rip-off. I also relish the idea of hacking it, although if it was Linux based, that would have been better.
Although I've had the unit for months I just finally finished my install. (I just don't have as much leisure time as I did when I was single...) At one day and counting, I'm quite pleased with the end result. Haven't had to reboot the car to make a left turn, or anything like that yet.
geosynch