I've had this chair for almost a week, and the daily neck pain from sitting all day in my former chair is....gone! Every day by about 11am the pain would start, and once it did, that was it. So far, no neck pain. This chair has every adjustment the ergonomic sites list, which is why I got it. The seat bottom has an adjustable tilt/angle; the seat back mesh goes up and down, and forward and back; the arm rests up/down-in/out (or you could leave them off all together). The seat itself is firm, but comfy with good padding. The back mesh is very comfortable, and will keep you cool in the warmer weather and has good lumbar support. I can't say enough about the ability to adjust the chair in so many ways, and I find I do make minor adjustments throughout the day, which I think has helped keep my neck from getting sore. It was easy to put together, however, the parts are heavy and bulky, so for that reason you might want a second pair of hands, but I did do it myself, and was fine. The only slight change I would make, and as a recommendation for those of shorter stature, the depth of the seat is just at my comfort range, as I like to really push my back deep into the chair back. If it was a 1/2 - 1" shorter seat, it was be perfect. It's minor, but if you're shorter than me, and I'm 5'5", it could be a bit deep. Appearance it is perfectly fine, perhaps not the highest quality plastic, but at a glance it's a good looking chair and very functional, which is all that matters to me. Very pleased with this purchase!!