I just assembled it yesterday. Directions were excellent with packets of bolts labelled with the step number. Only the last step - the headrest - took some messing about to get it installed (not difficult just clumsy.) My wife found the chair comfortable.
We needed two new chairs for our home office and made a quick trip to Staples "just to look." We ended up finding this chair which we both liked (shocker) and bought them immediately. We had them assembled and they were done within an hour. Pick up was seamless. It was an easy transaction and we are both sitting happily now.
This chair has been very comfortable and really helped my body be in less pain from long days of sitting. It's only been about a month but so far the chair is holding up well from daily use.