I bought two in grey.
What's good? Well, they look great and are easy to assemble. Reasonably small so don't take up too much room in  my small study.
Not so good: Not comfortable after a long time seated. I started work today at 9:30 and it's now 12:45. The seat foam has compressed so much I'm now sitting on the hard base (I'm 12 stone and not well padded) Probably time to get up and get a cuppa!
The wheels sometimes "grip" my laminate floor and don't roll as easily as they might. One of the gas lifts developed an oil leak. This was quickly replaced by Wayfair (thanks guys) although getting the old gas lift out was difficult (look on youtube for tips on how to do this).