Crazy Creek Hex 2.0. I like being closer to the ground plus you can use it as a CC foam torso mat under your inflatable sleeping pad if you are packing in.
I know you asked about a seat, but I have found a Hunt Comfort GelCore to be the best thing since sliced bread. Strap it to the bottom of the pack and be assured you can place it on any ground - regardless of angle or texture. I've used this pad from the Sierras to the deserts of Arizona.
Alite Mayfly. That little chair always finds its way into my pack. Fits nicely into a Kifaru long pocket with plenty of room to spare. Great for glassing sessions and sitting around camp. I’ve learned that if the ground is super soft that I have to put a rock under each corner to keep my butt from touching the ground.