What after market nav system do you guys recomend witch also I can intergrate the audio with my stereo ??????

P.S. I have PPC 2003SE cant pair with my car I heard WM2005 can pair anyone able to to get GPS audio thru bluetooth to stereo? I know you can send audio trhu bluetooth now.
http://forum.xda-developers.com/viewtopic.php?t=33532

Niko