I'm really getting sick of this, "M3vsS4" stuff. People have to realize that they are two very different cars. One is a small sports sedan, the other a two door sports car. It's like comparing apples to oranges. I own an S4, and I love it. Very comfortable, plenty of power, four wheel drive. Its practical and quick without being annoying. My friends M3 on the other hand is fast, handles great (harder suspension), and turns a lot of heads but cant be driven in the rain or on long trips. IMHO, two brilliantly engineered cars but each with a different purpose!