I have a Kinekt (aka Bodyfloat) sus post. I freaking love it.
I've previously ridden the Thudbuster, Moxey, Tamer, White Brothers, and a few other sus posts.
Also spent a *lot* of time on long layback ti posts.
Nothing works as well as the Kinekt. So active it even smoothes out rough chip seal -- but only for your body, not for your hands.