This is for anyone who has the factory sirius radio hooked up thru their non-navigation (6 disc)factory radio. How do you like the functionality of it ? I recently rented a Ford Explorer for a week and it had Sirius radio and i was hooked. I will be getting some form of Sirius radio this holiday season i just dont know about going the factory route. I need a pie adapter to hookup the mp3/minidisc player and i have read that the satellite option would eliminate the ability for a pie adapter. I'd hate to spend alot of $$ on something i cant take with me when i get rid of the car sometime down the line. Anyone else with Sirius radio recommend any specific plug & play models ? I think the ones with the replay/record function are the most ideal.