So I went and pulled this trigger for this bluetooth audio adapter. It was only $10. I've been using it for 1 week now for about 1 hour/day. The rechargeable battery is still good and the on/off switch really helps conserve battery power. I only worry about longevity on it and if it will last forever.
It connects to my phone in seconds once I turn it on. Sound quality is fine too playing from Pandora and 8tracks. Range is fine too as I've walked out of my car with my phone in my pocket without any interruptions.
Best of all, the only wire in the cabin is a short 6" one that goes to the adapter. It sits in the ashtray next to the aux input plug anyway, so if I got creative I could even get the whole thing out of the way.