For my personal use 2-3 hrs per day I find this particular chair to be comfortable sturdy and an easy to assemble chair. Cushion & back support could be a bit firmer and height adjustment range should be higher. Overall an excellent value from high priced alternatives.
One of the arm bolt holes wqs not drilled through and worse the outside was not counter sunk to the proper depth. Even after drilling out the hole to fix the first problem the bolt was too short to seat in the frame. I ended up having to get a longer bolt and washer to be able to assemble. The chair in the store was very comfortable. The one I bought is much firmer and bothers my lower back and lower thighs. Hopefully that will work itself out.