My JB4 335i defiently felt like it had more balls when cruising around town because of the torque, highway cruising was pretty much the same I would say. I even think that up to 60mph the 335i with JB4 was quicker then the M. After the first few days I had the M, I started getting the hang of how to drive the DCT so it would be quick, it just took me some time for some reason, at first I almost thought there was something wrong with the car, eventually after I got used to it I started liking it ALOT. But to be honesst I do miss the torque of the turbos, they really through you in the back of the seat
