I'm completely satisfied with this purchase
It came fast. It was easy to assemble. It's very sturdy. All mechanisms are smooth and effortless: up/down mechanism goes easily from 17" to 22 3/4". Turning is smooth. Easy to adjust the back in or out depending on size of person. 
The seat is very soft and comfortable. 
The fabric is a wide weave with a slight sheen so it can fit into a high-tech or natural setting equally well. It has an inviting appearance. It looks great at the desk in my bedroom.
The back support tilts slightly to fit the shape of the back. I'm not sure how this will be longterm for back comfort. I might
prefer to be able to stabilize it but time will tell.