I had an unexpected experience last April with rental skis and wonder why. I rented 2019 Brahmas and felt aft. I clicked into I think 173's and felt so much on its tails that I went in to exchange them, for 180's, before even taking the first ride up. It was better, but throughout the day, I had trouble staying centered. Interestingly, I own the 2017 Brahma's, 180, and feel very centered. The second and last day, I took out 173, I think, Quattro 8.4 Ti's and immediately felt centered. Why might I have had that experience with the rental Brahmas? They had demo bindings whose toe and heel pieces adjust to keep any boot centered