well i have owned several bmw's including an 03 530i. I currently have a 330xi 2005 and a 2004 corvette convertible. The m5 is carbon black metallic with caramel extended leather interior. The car is loaded 54,500 cpo. oh 18000 miles. Probably could have done a little better but it is mint and i fell in love with the color combo. Anyway, the numbers for the corvette and the m are very close in 0-60 etc. The feeling of the 2 however is so different. The corvette pins you in your seat more than the m5. It seems to be going faster. However the M5 is very quiet in comparison and before you blink your going 90 mph. The vette you hear scream. Oh by the way you also hear the vette rattle etc. The build quality is obviously not a comparison. Each has their place. It seems most of the 5 series including the m i have driven really launch in second gear more so than first. Are your feelings the same? Anything i should look out for. Thanks for the input. glad to be on board.