Yeah, the bass response is the most obvious improvement with the direct connection.

I did almost the exact same thing with my ipod setup. I have the 40GB version, and the belkin car charger uses the dock port as opposed to the miniplug jack on the ipod. I've noticed that the output is much cleaner from the dock port than from the miniplug.

Today I installed a cigarette lighter outlet behind the dash, so I don't have to occupy one of the power outlets in the dash. Very easy install with Radio Shack's outlet. Just tapped into the wire running from the harness to the AAI-NIS and ran ground to the bracket holding the HU. Nice and clean, too.

Did BestBuy do a decent job with your Commander install? I had them install my FM modulator (which is now history), and they did a half-assed job. Scratched the dash and did a cowboy electrician splice into the power cable. Seems like I paid them $40 only to have to undo everything they did. Just curious what your experience was.