It seems pretty comfortable so far. However the padding on the chair arms have already lost their shape and flattened the padding is gone. I do expect problems in the near future with the seat losing it's hydraulic pressure because at times I find the seat lower than where I adjusted it to.
I need a new work chair for my home office tried all the chairs at Staples and found this was the most comfortable. Would recommend it to anyone looking for a comfortable computer chair.