I bought a Satori Animaris suspension seatpost to swap between my gravel / XC bike . The idea was to offer something which smooths out the bumps as I transition weight from bottom bracket and saddle at different watt outputs. It becomes difficult to maintain 700w steady for hours with minimal weight in the saddle. The seatpost works imperceptibly, with arguably more noticeable increase in performance rather than actual comfort .. which was my intention. The spring is tuned very stiff, even for a 190lb rider.
Next, I ordered a Kinekt suspension stem, which happened to be available in the exact length that I needed. I am overall extremely impressed. The overall result is now a machine that I feel much more in tune with, while literally ripping up single/double track , with the rear tire squirreling about for traction in the loose sand.