I have struggled to find a comfortable office chair for many years, but this chair checked every box. On top of that, I broke an arm rest and messaged flexispot, they took care of the problem right away with no questions asked. Great company and amazing chair, worth every penny.
This is a well-designed and good quality chair for the price. The multi-directional adjustments on the armrests work very well. The recline lock holds the backrest upright without any play--my steelcase chair has just a little movement before the backrest hits the first locking point, making the upright position just a little reclined; I am happy that this chair does not have that problem. I am 6&2" and use the highest vertical position on the lumbar support; it seems about right, but I would say anyone with a longer back might need more range on that.
The chair is very comfortable and I like the adjustability. However, I wish the headrest was more adjustable. I can&t find a comfortable position for it (it feels like it is constantly pushing my head forward), so I just removed it.