JC you guys can be buzzkills. Not everyone in the world has $$$$ to spend on a fun, practical ride. There's plenty of scenarios with the above listed cars that could work out.
OP I have a CLS63 and an M3. While the e90/92 M3's are out of the question, theres CLS55's and CLS63's floating around in great shape for around that money. I personally find the e55/63's very nice as well. Any way you go, make sure you do your due diligence on the car. One heads up with the MB cars, get your airmatic suspension checked out.. they are known to go around 70k and can be about 8k to do all 4 corners if your going through the dealer.