Picking among the McLaren 570S, Audi R8 V10 Plus, and the Porsche 911 Turbo S is like picking which of the Avengers would win if they faced each other. There aren’t any wrong choices, just a lot of different preferences. That’s what it really boils down to among these three supercars. You could pick the 570S for its overflowing technological credentials and everyday appeal. You could pick the R8 V10 S for its all-around power and versatility. Or you could pick the 911 Turbo S because, well, it’s the 911 Turbo S.