This chair has really good lumbar support rolls easily and is quite comfortable. It doesn't take up a ton of room in my small office. Two things would improve it in my opinion but this depends on your body as well... I wish the seat and arms could adjust to slide forward and backward And while it is not uncomfortable it would be nice if the headrest was more adjustable. That having been said it's the one that I tried that offers the most support by far. My back is in better shape since I started using this chair.
Overall a pretty decent chair especially for the price but over time the mesh on the seat started to sag and doesn't provide quite the same support as it did new.
Bought this chair for work and it is very comfortable but the wheels are very cheap plastic. I had it for maybe 2 days and they started making this horrible squeak noise every time I roll. I am not an over weight person so I know its not a weight issue. I had to buy different wheels or I would've lost my mind.
The chair it self is great the assembly was a bit of a chore. The tilt knob doesn't get it to tilt very easily. Tilt is very stiff. Maybe over time it will loosen up?