At a previous job, I had an Ergohuman chair for 8 years. https://ergohuman.com/ergohuman-high-back-chair-le9erg-w-hea... They are expensive at ~$800, but worth it if you can find one. About three years ago, I managed to get one for home via CraigsList for $75. Had to replace the casters and the arm rests, but the additional $85 (+ tax) was an easy spend. If you can find one with the leather seat, even better.
I have an Ergohuman (mesh version) too and I'm quite satisfied with it. It has all the adjustments and supports that I need and the size is just right for me.
