CDDIG -
Thanks for the detalied response, it helped to make a bit of sense for me.
I went to crutchfield and they have a package: http://www.crutchfield.com/S-0Q1qTFayYcd/cgi-bin/prodview.asp?I=700PDV41
for $2150 that includes both the 7015 head unit and the DV4100 Nav unit. From you're description maybe the 7015 is not a model you'd be interested in.
My main "wants" are a good Ipod interface, Nav, and good sound quality. Playing DVD's would be nice but not really necessary. I would prefer to not have to buy\install a second unit in the dash just for Nav, otherwise i agree the Kenwood would be great. If the Pioneer had a better Ipod interface and sound quality then that would be the way I'd go but since that's one of my big wants I'll have to pass on that one as well.
I've read some good things about Alpine, but I don't think they have built in Nav.
So maybe I just get a simple headunit that will work well with the Ipod and buy a handheld GPS device. Or maybe I wait till someone makes an all in one device.
If anyone has any good suggestions or ideas I'd love to hear them.
Thanks