http://www.caranddriver.com/reviews/...al-test-review
Lots of folks are/were cross-shopping these 2 cars, including myself. They have similar performance stats. The 718 does have a noticeable price premium though. The M2 is faster in the straights as evidenced by its 4 mph faster trap speed. The 718 is scalpel sharp. The buyer wins regardless of which one he/she chooses.