I *just* got the Realspace MFTC 200 (as in it was delivered about an hour ago and I just finished putting it together!) so I can't vouch for its long term comfort or durability but last weekend I spent a good bit of time trying out chairs at Staples, Office Depot, etc. I found that I really liked the ones where you can adjust the seat angle but it seemed like that was a feature that was mainly available in pricier chairs (eg, a $450 Tempur-pedic chair
). This one was $250 at Office Depot but I found the exact same one on Amazon for $150 (I know, I hate to shop in person and buy online but I make exceptions if it's a big box store and a big price difference).
It has a mesh back so it's relatively cooler, the cushion is firm but not too firm and it has way more adjustment options than I was seeing at this price point and even at higher price points - back tilt, seat tilt, quick adjust arm rest height, and adjustable arm rest width (you need a screwdriver for that). Plus, a lot of the chairs these days push your shoulders forward so they aren't set up to even allow healthy posture. Also, I'm 5'4 and with the seat front tilted up, it's maybe just a hair too tall (ie, I will probably still use a footrest) but I think this is probably a really good shorter person's chair.
Anyways, I really liked this one but regardless of any specific chair recs, my two big takeaways were:
#1. The more adjustments, the better. And,
#2. You probably have to go in and try a bunch out.
Realspace MFTC 200 Multifunction Ergonomic Super Task Chair (#493876): https://smile.amazon.com/gp/product/B071NTCMJN/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1