I haven't tested out the iphone 3g bluetooth yet...and I'm debating a cd player upgrade in my car that has integrated bluetooth/handsfree. How does your 3g bluetooth interact with your current bluetooth items? Here's the cd player I'm looking at, it also has ipod control ability. Sony MEX BT5100 I previously posted something similar in the accessories forum...but this is more of a question as to the iphone's bluetooth interaction and your happiness/dissatisfaction with it. ...and whether or not anyone would recommend against using a cd player for bluetooth/handsfree or not with the iphone 3g.