Mmmmm...... the M3 sedan. It's a great car- basically a coupe with 4 drs so you can take the kids to daycare and back at warp factor 9......
As for me, I'd rather get the coupe and the wife can take the rugrats in something that has more than 2 doors.
But if you want luxury to boot and more interior space AND are willing to sacrifice a little performance (ie; no canyon racing) then I think the new 550 is the answer. Plus you can always upgrade the suspension/power etc...
