Balance of the M2 is the stuff of legend. I have driven it at Spa Francorchamps, Hockenheimring and Nurburgring Nordschleife and I can vouch for that.
But living in Germany I spend a lot of time on the Autobahn where hitting 160 mph is a likely daily occurrence, and at least Nordschleife requires you to shift into 6th on the back straight while Spa requires you to wring out 5th to red line.
And at those places I wish for a V8.
Yes, both the cars you mention weigh 200-300lbs more than the M2, but they are both faster than an M2 as well. Nonetheless, the question is do you care about lap times, or a nimble driving experience.