Aeroad sizing

I am 5’ 11” with inner seam of 32”. Canyon slots me bang in the middle of S and M. Since the new aeroads have slightly relaxed geometry, which one would be better for a more relaxed ride.

I have a larger torso than average for my height. Going just by height, it should be M, but based on inner seam, S seems to fit better.

I am just a casual rider who wants to ride fast and have been eyeing an Aeroad for a while. My typical rides are between 1-3 hrs.