If it's like the E90 335i, I think you have to push the car more toward it's limit to get at the fun, it's a bit distant at normal driving speeds.
Haven't driven an F30 but the 328i sounds more accessible, thanks to the much lighter motor.
I guess it's kind of like when people used to replace the four cylinder in the E30 with a six - car took on a totally different character.
"When you were born, you cried and the world rejoiced. Live your life so that when you die, the world cries and you rejoice." - Cherokee Expression