Bluetooth headsets for the Navigator IV GPS

[jesseknumbskull]

I bought the new Nav IV gps unit for my 09 R1200GS and love it. Everyone already probably knows that the only option to hear audio from the unit is a bluetooth headset. I was wondering if anyone had any suggestions. I want to be able to use the media player and hear the gps directions. I want an earbud setup so I can choose to wear my helmet or not but still enjoy the system. Also the book says you can put up to a 16gb micro SD card for additional music storage, does anyone have any pros cons or suggestion on which one to get.