http://www.xoutpost.com/bsws-mobile-e...hlight=pioneer

I would suggest taking a look at the Pioneer AVIC-D2 (this is a good search term):

http://www.crutchfield.com/S-mOWKpAY...px?i=130avicd2

I have no personal experience, but I have seen a lot of discussion on it.

Hope this helps!

__________________
2006 X5 3.0i TiAg
20' Style 87 Rims