I did both this year
the Kmod will allow you to manually adjust your ski lift, my sled used to be 3 feet in the air , and i would ping pong off trees at times, now I set it at cush for the trail and then a 4 once I get to the MTN to climb, when I set it on a 4 with the power claw 2.25 the skis stayed on the ground pretty well, now that I got a 3" even while set on a 4( 90%) coupled, least ski lift the sled is still 1-2 feet in the air while climbing the steep stuff. I have to lean in front of the bars to keep it down. Just rode in 2 feet of fresh powder yesterday and found that the 3" had less track speed and would dig a lot deeper than my buddy on a 2.5". after looking at both our tracks going up the hill, my track trench was about 8" deeper. also he would traverse up the hill at a faster rate. also the 3" would catch an edge in the corner if you did not keep on the throttle.