M3 or 330 Coupe HELP

I need your input to make a major decesion. Please describe the ride quality of an M3 vs 330 coupe with Sport Pkg. I am concerned that the M3 may be to harsh. I test drove a 330 w Sport Pkg and found it firm but very satisfactory for a daily driver. The salesman reported the M3 as significantly firmer(is it to firm for a daily driver???). I would appreciate replies from actural M3 OWNERS. Thanks so much(I have found the cooperation from this forum great, thanks again).

I own a 97 m3 but I had a loaner 330i for a week. I would take my car over it any day, the m3 has just total control of the road. The suspension is tight but I still think it's a better ride then every day car. Also the performance between the to is uncomparable the m3 is a race car.

M3 suspension is a lot stiffer than 330Ci with sports package.