I've only had it for a week, but it feels very comfortable. The chair tries to sit me up more than I'm used to, I generally slouch a bit so this thing is helping me with a better posture. The tension knob for tilting is standard issue, along with the raise/lower bar also doubling as a lock to keep it from tilting at all if that's what you want. The price was on par with what I was expecting as far as materials goes. I'll update if this turns out like my last chair and the quality just isn't there, should know within a month or two as I spend a fair amount of time in front of the computer.