I've got the V35 sedan and I must say, for the torture that I put it through keeping up with the guys, she doesn't do too badly.
Only thing that I would upgrade is strut bars, better suspension and stickier rubber.
These things don't feel like boats when you hit the twisties. Handle exceptionally well for a sedan.
Let me tell you, one baby seat in the back of a sedan is a handful. Two in a coupe is a night mare.
Biggest thing is, with the limited space in the coupe, you cant clean all the crap kids leave behind very well. Sedan is what you want.