I recently switched out the float X2 on my Firebird 29 for the Kitsuma Coil. Got a progressive and linear coil to try, but I've only been on the progressive so far. For me the difference was instantly noticeable and the Kitsuma is certainly an improvement. It's got the coil feel of plushness over rough terrain with good small bump compliance but still plenty of pop when I want it. Dialing in the settings was quick and easy. A couple of runs on a fast and rough trail with a couple of drops and I had it just where I wanted it. The ability to easily adjust compression is appreciated. Climb mode is a full lock out. Extremely stiff and doesn't bob at all. One of the reasons for switching was that I could barely get a Canadian summer out of the X2 before having to send it in for rebuild (3 times in two years) due to air in the damper or dust seal coming out. Hopefully this is a bit more reliable, but I'm not far from a CC warranty/service center.