I'm quite impressed. The adjustments are very helpful, and very effective. Low speed compression is very effective in keeping the front end up in its travel in really steep situations, without making the fork harsh. The rebound is adjustable from snail-slow to Boxxer fast. I wasn't riding anything that required high-speed damping, but I can definitely tell that adjustment works as well. This is my first new fork on my Bullit for 4 years, as I've been rocking an 01 Monster T since 01. Despite that fork being the stiffest one out there, I still didn't notice any flex in the 66. What I did notice is that I can now bunny hop at least 6" higher and accelerate much more quickly. Manualling is much, much easier as well. I think I'm going to like this fork better than the Monster. If you're thinking about getting this fork, you won't be disapointed.