well I have only had it about 10 days.
My butt needs to re-adjust. It is harder that the wore out chair.
This version is a quick adjust. Meaning you stand up to remove the weight off the lever. Then you can just pull the chair up.
This version is 3 inches higher than the screw up/down chair.
Also note this version of the chair does NOT swivel. The whole chair rotates on wheels. The screw up/Down version swivels.
You can choose color variations of wheels , material, and steel.
After some more time I will re-post and say yea or nea.
what ever i am stuck with it. I might have to limit sit time to about 90 mintes.
I put this chair on a floor mat so it does not roll out around. The wheels do roll really easy.