[HeartMD]

I had a 335 from 2008 to 2011 and in that time had 3 HPFP replaced. It got to the point that I was literally in the dealer once every month or two. That being said the gas mileage was great and it had nice low end torque. However IMHO I hated the slight turbo lag when off the line. The M3 on the other had is a completely different experience. The engines sound is amazing. The ride is just so much more sharp and responsive. The power delivery is very linear and keeps increasing all the way to redline. The only downside I see to owning an M3 would be the "M" tax you pay to play. The gas cost is significantly more and you will find yourself going through tires (which are not cheap) very quickly.