I have a mesh office chair at home and use a mesh office chair in the office I work at.
I used to have a non mesh cushion office chair I had from Walmart and it was okay but was starting to break down and after sitting on mesh office chairs in the office I work at I decided to by myself a mesh office chair which was a bit more expensive but it's so worth it.
The mesh office chair doesn't get hard to sit on like the old cushion office chair and I would say it's very comfortable and I highly recommend getting a mesh office chair.
The mesh office chair is also more breathable so your butt doesn't get as hot or sweating as it would in a normal cushion chair.
I would never buy another office chair unless it's a mesh bottom and mesh back office chair.