This purchase replaces an older slightly less expensive chair by the same company. The new one is a bit larger and a good deal sturdier. It is not quite as comfortable Nor is it as flexible. But upon the whole I suspect it will probably last longer and hold up fr the sort of long sessions that I tend to give a chair..
I did so much research and was about to shell out ~700 for a high-end chair then came to my senses and found this guy. I don't understand how some people can spend so much money on a chair. Anyway I'm 6'4" and 215 lbs and this chair fits me perfectly. My fiance who is 5'7" also finds it really comfortable. My only complaint is the plastic used to secure the backrest into the seat. The screws come a bit loose and the backrest gets a bit wobbly and I need to re-tighten the screws. Other than that this chair is great. I work a 9-5 in it 5 days a week and have 0 back problems and the chair is supportive.