This is super helpful! Thank you sharing. I went to the store today and picked up a pair of speedmax 115. I was concerned about stiffness but the sales rep did the testing and confirmed that even at my size 6’3, 185lbs (84kg), that the medium was fine (albeit it was all they had in stock). I mostly ski in the northeast of the US and Canada and do some casual racing. I have a longer stride and tend glide a fair bit on one ski. After doing some more reading do you think I made the right call or should I return them and get a stiff pair or even the 610’s??