I have only been using it a week but I really like this chair so far. The seat is nice and wide. At 6'3'' and 300+ lbs it's fits me pretty well. It's even borderline too wide. I also have back issues and I was able to dial it in to a great position that saves me from extra strain on it. The cushion seems to hold up well over a long day.
I’m 6’5” not very “big” and I hate how most chairs leave my knees up because the seat doesn’t go high enough. Seat width is comically huge but super comfortable because it is. The seat has me leaning a little further back than I would like while resting while it’s upright only downside. Comfortable to sit in for long hours.