I've got the ameristep 360 swivel, found the triangular seat uncomfortable, and the swivel noisy (I weigh 200+).
I also tried a collapsable chair with a back (no swivel and no adjustable legs,a dn the nylon camo material is noisy in the cold northern temps.
I made a torges seat last year and so far on several hunts I love it. no noise, infinitely adjustable, and light weight. think I'm gonna stick with this while ground hunting in the open.
that just leads me to look for a solution for hunting out of a pop up blind. something thats comfortable, with a back, and not noisy.