[sandwi54]

I have both a M3 (mine) and M550i (wife), and the two cars are really different. M3 is raw, harsh, loud, and incites excitement. M550i is quiet, luxurious, fast, and stable. I love the M550i and enjoy driving it most of the time. However, there's a time and place where I want to drive the M3 - when I fire up the engine I feel like I'm on a racetrack. The excitement is an intangible feeling that you only realize you miss after you drive another car that's more bland.
That being said, if I can only have one car, I'll pick the M550i. I guess I'm getting old.