I have been wanting to get a bluetooth unit for my car for a long time now, so i can play music from my phone (Motorola droid) through my deck (Alpine CDA-105). I dont just want to get the unit Alpine sells for their deck, i want something that will work for any deck and any phone that support bluetooth, so when i get a new deck, i dont have to buy a new bluetooth unit. Are there universal devices out there like this? What are the best options for a bluetooth device? i've never used bluetooth before, but i want something that will allow me to play music clearly through my car stereo.