Buy the Marsail Ergonomic Office Chair.

It is the only one of the three actually built to survive a full 8-hour workday, and the reviews back that up.

What was compared

Marsail Ergonomic Office Chair: Office Desk Chair with High Back Mesh and Adjustable Lumba... — $199.99
BestOffice Ergonomic Office Chair | Mid-Back Swivel Desk Chair | Dark Black | with Lumbar ... — $42.99
NEO CHAIR Office Desk Chair High Back Mesh Chair Adjustable Lumbar, Black | Ergonomic High... — $67.80

1. Support that actually fits your body
Marsail gives you a 2D headrest, 3D armrests, and lumbar that slides both forward-back and up-down. BestOffice skips lumbar adjustment and a headrest entirely, and NEO's armrests only flip up, they do not slide or swivel to meet your arms.
2. Still solid after a year, where NEO sags
Research on NEO CHAIR documents the mesh fatiguing into a hammock shape after 12-18 months of daily 8-hour use, with wobbling complaints piling up. Marsail owners report a year-plus of daily use with no issues and lumbar support holding steady.
3. Built for a workday, not just an afternoon
Testers on BestOffice concluded the comfort is enough to get by for short or medium sitting sessions, not a full shift. Marsail pairs thicker high-density foam with a 90 to 120 degree recline built for holding up across 8-hour days.
4. A frame that will not loosen up on you
Marsail is rated to 330 lbs against NEO's 300 lbs, with a wider seat base spreading the load. That extra headroom means less strain on the frame over years of daily use, which lines up with NEO's reported wobbling as it ages.
5. Yes it costs more. Buy it anyway.
At $199.99 it is well above BestOffice's $42.99 and NEO's $67.80, no argument there. But you are paying for adjustability and durability that keep it from becoming a chair you replace in a year, which makes it the cheaper buy per year of actual comfortable use.