This seems like a pretty nice chair.  I haven’t used it for a long period of time yet.  It was easy to put together and it seems pretty comfy.  Firm, but with a touch of squish in the seat.  I was surprised that it doesn’t go up as high as I’d like it to.  I’m 6’1” and I feel like I could use another inch of height in the adjustment bar so my hips sit slightly above my knees.