Albertporter, I am shocked. I heard the BMW system in a new M5 earlier this year and thought it as TERRIBLE. Maybe the one you heard was significantly different
My 4.4 X5 is not new, I can't afford $70K for a new one. Maybe they changed them in the last couple of years. The system in mine is good, especially with the iPod glove box cord and Video iPod files as Apple Lossless.
I get to choose my favorite driving tunes from the steering wheel. On the way home today I was spinning Adrian Belew "Side One" and "Shiver and Burn" by Azure Ray.