Used K2 MindBender 108, 193 cm length. Probably 40 days of use. Mounted once for 315 mm boot sole length. Marker Griffon bindings, up to din 13. Had a core shot that was repaired. Doesn’t affect performance and is stable. I use carbon wax, which is black and shows ever minor scratch as you can see. The bases are still flat and fast. A base grind would take out the scratches. Never been ground. Probably 3 years old. They didn't get used last season.
Great GS style ski, Great in powder with wider waist, turns are easier to initiate because of the fork shaped titanol layer, which allows the ski to twist a little. Big boy ski, and doesn't feel short in the tip in deep snow.