I've been wondering about the same thing too. My E420 supposedly has Bose sound system. It really does sound pretty good I think. It's not too clear but the mids are nice and strong! Good for soft music and classical stuff so I'm not complaining.

But... Chris (michakaveli) upgraded his stock radio on his 96 E300 and his sound system was amazing!

BTW, have you a CD-Changer?

The only MP3 headunit that wouldn't look weird in a W124 would probably be the Alpines. Somehow I like Pioneers and I think they have a nice clean look when switched off. It's when they are on that they look bright! ;

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2008 BMW 335i Coupe