I like Mercedes sedans - but your talking about the sports car - I can't stand it - on a serious note - your more than welcome to take my car for a hour - now, it's modded to the gills - headers, exhaust, brakes, switched out gears, etc., but regardless, a stock C6 beats both those cars - I am sure the interior of the SLK is phat though - forget that Cayman - it's merely a Boxter - with a hard top - the new M3's are coming out - if you want a sports sedan - and the new Jaguars are cool looking too - I have a feeling you want something somewhat exotic