Whats the best car in dash (not flip screen) DVD/MP3/CD/Navigation GPS Unit for $800 or less? I want it to function as a head unit with the attachment in the back for the ipod and work as a good gps navigation screen. I heard that Panasonic is really good for the price, but want other suggestions. This Panasonic one is the one I was told to get CN-NVD905U its $700 on ebay. Thanks a lot Brad