This is still a new chair for me, but it is exceptionally comfy, whether sitting for just a bit or a while. It arrived well packed, went together very easily, and is very comfortable. 
Cons: Mine seems to be a bit on the noisy side depending on how I lean (forward, back, side to side). Also, I wasn't a fan of the standard wheels so I swapped them with replacement wheels I used in my previous chair.
All in all - hoping it holds up well over the next few years.