I went with the re11 in stock sizes and am blown away. So far I've only used them for street driving and have about 400 miles on them.
The sidewall stiffness is very noticeable, and body roll is significantly reduced from my stock ps2 tires.
I'd highly recommend considering moving to an extreme performance tire like an re-11 or ad-08 if you are using these tires for some auto x and track days.
I feel like the re11s look better, are almost an inch wider on the wheel and ride nearly as well as my ps2s.
Highly recommended. Good luck in your search!
2015 M3 6MT