Evening dude, I opted to get a Pioneer bluetooth headunit instead of the OEM+ route and it's good! I'm sure some searching will get you the answer, you need to be sure if an Audi bluetooth module will play music via it too otherwise it might be a bit of a half a job retrofit.
The headunit I got was a DEH-X5600BT, I've set the LED colours to red edges and white text, it looks like it's meant to be there!
I'm sure they do double din units too.