I agree with what 335beast is saying..for the tuner community, the fact that there is a lot of potential in the 335 puts in question the logic behind the M3 but for somebody like me, who doesn't plan on tuning I like the out of the box performance and handling of the M3...
This is from somebody with both a 335i and M3 in the yard so believe me both cars are definitely amazing and as some have mentionned totally different in their purpose and delivery, which is what makes them both fun!
Either way a car guy or girl is lucky having one or the other of these amazing machines to drive!
2008 E92 M3 6MT
2011 E90 335xi