When I purchased my 2013 M3, I was looking for the total package. If I wanted to go in a straight line and burn it off the line, I might have purchased something like a Ford GT 500. I wanted a car that was solid, balanced, powerful, good resale value and lots of class. M3 has it all in my opinion. It's certainly not a cheap car but it has a good history from what I've read. I also wanted one of the last V-8's!
Enjoy your M3!