DEH-X6600BT - Pioneer In-Dash CD/MP3/WMA Car Stereo Receiver with Bluetooth, iPhone/iPod USB Support, Android Media Access, and Pandora Ready
You get a lot of receiver for the price.  Bluetooth audio works well with my iPhone 4S, haven't gotten a call yet so I can't comment on the mic.  Works with Siri.  I routed the included microphone wire under my dash, along the A pillar and up to my sun visor (2002 Grand Prix).  The display can be hard to read when its bright out, but if you pick white as your text color its visible.  2 line display is a great benefit so the clock can always be on in the bottom line and artist info is on the top line.  I'll 