I actually have the Dynavin in my E46. It's a pretty cool head unit, all the features I was looking for and I love the exact fitment for my dash - no goofy adapter kits! The map software is just Igo8, which is used on a lot of cell phones and windows mobile devices (which the Dynavin pretty much is). Unfortunately, I haven't been able to figure out how to update it to 8.3 with the new maps and the 3D stuff (I have a V3, V4 supposedly has the new stuff and does have better knobs).

I wish I could get one for my wife's X5, but I do not want to lose the cluster information - hope they can get that resolved. It would be nice for her to have bluetooth, an SD card reader, better NAV, DVD, and MP3 in one nice unit.