I just installed my Grom USB unit as well. I'm loving it. It's like having the hard drive on the E9x models. I can see all my albums on the nav screen, switch between songs using the wheel, and play music from my iPhone using A2DP.
This blows anything else out of the water. I left the whole unit in the trunk and i play music using the bluetooth A2DP or from my USB.
- Automatic Climate Control - $40
- Turn Signal Indicator and Wiper Lever w/ center circular piece - $35