I have lower back pain issues and need good lumbar support. This was the most supportive AND comfortable chair of all the ones I tested. I needed one that was small enough to fit a temporary setup too -- I didn't want a large "executive" chair. Again this fit the bill perfectly. Easy to roll on as well.
This chair incorporated all of the features I wanted and at a very competitive price. It offers good lumbar support and adjustable seat and arm height.
I liked this chair because it has a mesh top and bottom nice and cool. It has good adjustments and feels like quality. Unfortunately I could not get used to the curve of the low back. I kept wanting to deflate the lumbar support but it can't be done. I wound up buying a more basic chair that's less adjustable but has a more flat back as its only position.