Audi 90 Opinions

I am thinking about buying an Audi 90 (5-speed, 130k) to use as a commuter. The car in question is a blk/blk 1995, with service records dating back
quite a few years. I haven't looked at it yet, but I thought with this groups help I would be more prepared when I check it out. I am well versed with German cars, water cooled Porsches specifically, so I know the obvious stuff like cam belts/water pump, etc etc. What i've been told so far is the car has a converter that rattles and the speakers do not work, but otherwise looks/runs good. Asking price is $3500.
What should I look for? What are the notorious problems with 90s? In general, are they a well built & reliable car?
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