E92 M3? Yep, to my mind in manual form one of the best cars ever made. I absolutely love them and haven’t even had one! I do keep looking but my mapped 330d suits my current life and is probably as quick as an M3 when pottering about town. I just can’t justify paying more than double my cars value for effectively the same car but a better engine that happens to use twice as much fuel. I would however swap a 330i for an M3 in a heartbeat so to the OP, go for it!!!!