^^^ Consider power to weight.
It sure sounds to me like you've already reached the conclusion that the new M3/M4 will not see an incremental improvement in performance over the E9x M3 as its predecessors have over their respective outgoing models, or indeed as the new M5/M6 did vs. the E6x. When you factor in your demonstrably cocky attitude, it seems like a recipe for egg on face to me. Just my opinion.
A gen-u-ine BMW eff-eight-zero with them tandem clutches in the transmission and that dad gum sun roof on the top-a da cawr.