Bought a 35 and had some regrets. I then purchased some stock 37s from another member here and threw 'em on after a good experience at Raptor Assault. While there are things I liked about the 37s, I ultimately went back to the 35s after the Goosetune. I think the 37s feel a little more cushy/nice both on and off-road, and love the look. With that said, I personally do notice the acceleration difference. I don't need TRX levels of speed, but I do like it to be peppy. Also most of my off-roading is sand, and I didn't really notice much of a difference in performance there. Just my personal experience. 37s fun on the Braptor tho.