jcyuhn, sorry to hear of your troubles with your car. So far, so good with mine. I bought it used with 24k, and it only had two minor warranty items, none of which made it undriveable(odometer and convenience relay). Some of the things I don't like about it are a few of the interior fittings seem plasticky and very light duty and the rack- and- pinion steering is really hard to get used to. Not that it's worse or better than the recirc. steering, its just not what I expect when I'm driving a Mercedes.
Maybe the bugs are worked out of your car by now--incidentally, how has the dealer response to your problems been?