I'd go for the IKEA Markus out of those three options. I'd also recommend the CLATINA Mellet - much more adjustable, but worse warranty and customer service than IKEA should issues arise.
Avoid headrests for in-office staff. Headrest fit is tough to get right and a poorly fitted headrest is very uncomfortable. You could buy the Hyken or Dexley and just not install the headrests, however.
The Hyken is designed for petite to average sized people only. Anyone overweight or taller than the average male will probably find it uncomfortable. The headrest in particular is too low for most people over 5'9".
The Dexley is wide and has a rather deep seat. Short folks might have trouble with their knees clearing the front edge of the seat.
The Dexley does not lock in an upright position. It is designed to recline about 20 degrees even while the tilt lock is engaged. This is good for maintaining back support, but lots of people hate not having the option to tilt lock fully upright.
In the realm of new office chairs, this is the best value for the price in terms of quality and adjustability - CLATINA Ergonomic High Swivel Executive Chair with Adjustable Height 3D Arm Rest Lumbar Support and Upholstered Back for Home Office Black BIFMA Certification No. 5.1 https://www.amazon.com/dp/B07H9YLLNG
If you’ve sat in a steelcase leap v2 and it was acceptable, I’ve found the Clatina Mellet to be a decent budget option. it sounds like the fabric backed no headrest option is best for your budget.
I’m 5’7” no shoes and 170lbs for reference. It’s available on Amazon and Walmart. Looks like about 2/3 of Amazon reviews are 4-5 stars. Like anything if you get a lemon, send it back for replacement. Mine has no issues. It has 5 year warranty (I’d suggest the Amazon extra insurance just for piece of mind) 90 day manufacturer return and if via Amazon they have a month return. If you can’t try it out at a Walmart do what I did, try it out for two weeks and then you can always return ship. The fabric cushion is comfy but initially in firmer side which I think is a plus as it will last longer as it breaks in. I just measured arm rest spacing and rear and front seat cushion width and they are all 19” give it take 1/4”. I put the seat pan all the way forward and I could comfortable sit cross legged - your butt does hang out in mid air ever so slightly but it wasn’t odd or uncomfortable.
CLATINA Ergonomic High Swivel Executive Chair with Adjustable Height 3D Arm Rest Lumbar Support and Upholstered Back for Home Office Black New Version https://www.amazon.com/dp/B07H9YLLNG/ref=cm_sw_r_apan_glt_fabc_A9D34QR7HH2APG7JFFJV?psc=1
I bought the black fabric, not mesh version without a headrest for 209.
We talking USD 🇺🇸 OR CND 🇨🇦?
If USD:
CLATINA Ergonomic High Swivel Executive Chair with Adjustable Height 3D Arm Rest Lumbar Support and Upholstered Back for Home Office (Black) New Version https://www.amazon.ca/dp/B07H9YLLNG/ref=cm_sw_r_cp_api_i_v26bGb9JFRBVR?psc=1
Here's a comparison of 5 of their favorite under $300 chairs, out of 20 overall.
https://www.youtube.com/watch?v=KvDRnBQiER0
This was their winner, $229
The general consensus here is that a used Steelcase Leap or Herman Miller Aeron is the best chair $200-400 can buy, but if you want something new in that price range check out Union & Scale Hyken or the Clatina Mellet.
Do not pay full price for the Hyken! It goes on sale like every two or three months.
The fact that your desk is so high makes this difficult, because you won't be able to take advantage of chairs that adjust really low. You'd probably be best off buying a footrest and using an average height chair. Does the Clatina Mellet ship to you in Mexico? You can also get it with a headrest for a little bit extra.
For that price at IKEA, I think the best chair for you would be the Matchspel. It's like a cheaper version of the Jarvfjallet, but with softer foam in the seat, which makes some people like it more.
I wonder if there are any used Steelcase Leaps available near you. It's a pretty ubiquitous used chair to find in the US at least, and it adjusts to a really low height.
Around that price range, I would suggest either the Alera Elusion or the Clatina Mellet (Steelcase Leap knockoff).
Under $200, the Alera Elusion is a good option. If you can do exactly $200, I'd get the Clatina Mellet.
CLATINA "Mellet" Ergonomic High Swivel Executive Chair https://www.amazon.com/dp/B07H9YLLNG/
CLATINA "Mellet" Ergonomic High Swivel Executive Chair https://www.amazon.com/dp/B07H9YLLNG/
Unfortunately, probably not, although I've had to work on worse. What's your budget? Could you afford something like a Clatina Mellet or an Alera Elusion?
There's the Clatina Mellet coming in right at $200. It's similar in design to the Steelcase Leap.
A used high-end chair in good condition is better than a new $200 chair. But if you must buy new, the CLATINA Mellet is the best at its price point for most body types.
CLATINA Mellet https://www.amazon.com/dp/B07H9YLLNG
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