[RadiuM]

I cant remember what the different models are, but i upgraded the stereo in the 135i from the base package to the one above it, which was about 1k RRP? I was in the same boat and wanted more power + more speakers and didnt want to go aftermarket. If thats the pro pack, I had no idea it came with the surround sound options and the equalizer. I thought that was the one they call logic7

and yeah, i have no idrive.