Just ordered an AVIC-X930BT to put in my 2007 Tahoe.

I like to keep my music on a USB stick that I can leave connected in my truck and only take out when I need to update it, I easily did this with the AVHP3100-DVD I had in my F-150. However, I do have an iPhone 4. Is it possible to have cables run for both the iPhone and USB??

Or should I just start storing music on a mini SD?

U can't have 2 devices hooked up to the same USB. Get a 160GB iPod Classic to store all your music.

i thought the whole point of having an iPhone was to have a phone AND your ipod with you all the time?

as mentioned, no, one thing plugged in at a time.

why have some music on one device and other on another? then you have to remember which device certain music is on.

also after you have used the Avic's ipod interface, using flash media is like going back ten years in time, and having to deal with and maintaining good file structure just to be able to find stuff.