ill throw my .02 in, i have this unit
Clarion DXZ558RMP CD/MP3/WMA receiver&remote control - eBay (item 280379560193 end time Feb-26-10 03:52:56 PST)

its not that expensive, and i found the right connector for the ipod on ebay. There are pics of it in my gallery

Best part.....no wire harness, easy swap out and everything works, just get an antenna adapter, sounds good too