The chair was simple enough to put together, but feels to be good quality. I have to point out though, that even at it's highest setting, the headrest only comes to the top of my back! I may actually take it off.
I am 6' 5" - so if you are also tall then take this into consideration.
I have only just started using it so cannot comment on it's comfort after prolonged use. Other than the headrest it does seem to be ok however. I do like the fact the arms can be raised up, makes it easy to push right up to a desk.