I dont know what its like for MB but there is a large conversation about Phoenix Microlight HID conversion at: http://188.8.131.52/forum/forum_6/wwwall.htm
I have to warn you, this page is HUGE, and its takes a long time to load.
But from what I heard, everybody is getting the conversion - I would reccomend euro headlamps and HID conversion
• Blizzak454 •
Atlanta GA, USA
1989 BMW 735i