I really don't like Porsches (sorry Dan ...... probably just because I can't afford one ) but like the M3 you can't really dismiss them as awesome cars?
911 and Cayman (if you like that kind of thing) are in your price range.
911 will be as fast, comfortable, impractical but a damn sight more reliable?
http://www.autotrader.co.uk/classified/ ... ogcode=flp