This chair is really comfortable. I can sit on it for extended periods of time and my butt and back don't hurt. My only real complaint is that the plastic arms look kinda tacky. Also it's kind of a pain to assemble but I guess that's true for most office chairs.
This chair sits very comfortable. There is just enough rise at the legs to keep you snuggly in place without sliding off the front. I am short so I require a shorter seat this fits perfectly. Also the arms fold up out of the way when I need to move around a lot or get the chair under a table edge.
This chair is very comfortable and conforms to my back. The arms fold upwards to allow the chair to push under my desk. I would definitely buy another if needed.