Nice thread and the way I found and registered for HD Talking. There's a lot of good information, but even after reviewing most, if not all of the suggestions, I find I still don't have the information I need. Some who have done this before, including those that offered links, may be able to point me in the right direction, saving me a bunch of time as well as costly mistakes.
My Apple 3gs iPhone eats batteries, particularly when it is navigating. I plan to use the phone both for navigation and for playing the Sirius radio application I purchased shortly after getting the phone. That means that I'm going to need some form of power, whether part of the mount or compatable with it. HD offers their own GPS/XM radio that works through the built in Street Glide radio, which suggests that it may be possible to use other GPS/sound sources without external wires running to the input plug on the face of the radio. My preference is for a clean, detachable mount that uses the bottom iPhone connection for both power and sound.
Anyway, that's my goal. If I can't find a satisfactory way to mount the phone, I'm probably going to wind up with the HD product. While I'm sure the product is good, I'd rather use what I already have, avoiding the high cost of the HD GPS system and avoiding the monthly charges of yet another Sirius/SM subscription.
All suggestions will be gratefully considered.
Lee