I have an Alpine car stereo that is made to work with iPods. About the only "good" thing it does is answer the phone flawlessly (via Bluetooth). Any listening to of music or podcasts requires using the Alpine navigation, which is absolutely HORRENDOUS. Awful. Horrifying. It won't even save a place in a podcast- it always goes back to the very first one. SO annoying. Yes this was mentioned in the reviews but I had no idea how bad it would be...And I thought I would be able to use Bluetooth to listen to music, but it doesn't work- just for Siri and the phone. At least it works well with Siri.
The deck I had before that was a Pioneer, and while it didn't let me use handsfree for the phone, I could use the native iPod navigation. It had a cord that came out from the back that plugged into the iPod.