The M3 is high rev engine, in order to enjoyment of the M3 more like track or car show IMO for the 135i you get most fun on local driving but in order to track the suspension components need to be upgrade. I had all M3 controls arms, sway bar, RSFB but no LSD and it handle great but LSD which really need it since i have no traction at all when i get off the corners. Lighter, more torque i would say with full suspenstion set up and LSD iur 135i will be more fun on local or track but when come to the car show we are just some plan BMW lol and 10 years from now the M will keep the value while our car is price to nothing
