I use this chair for work and it is very comfortable. I bought one for my husband to use at home for a gaming chair and he really likes it. The only downfall is that it is not the best for taller people. The headrest hit him right in the shoulders so we decided to just leave it off.
This is a very comfortable chair and great value for the price. I spend around 8 hours a day at the desk and this chair is a huge improvement on my previous one (which admittedly wasn't very good). My only minor complaint is that the arm rests become a bit uncomfortable after a few hours; I'm not sure how to describe it but they sort of rub my arms.