I would have rated the chair a five however I am average height and the chair cannot be lowered enough for me to be comfortable at my desk. I tower over my desk causing neck and shoulder stress.
I bought the FlexFit Kroy Mesh chair and couldn't be happier I did. I went to a used office furniture store and they wanted $250.00 for a used mesh chair not half this quality. The chair is comfortable and tilts back comfortably when you want it to. Its adjustable on every axis and the price was right too.