The Perfect Home Office Chair

I’m in the market for a new home office chair. My 8 yr old Herman Miller Aeron chair is on loan, and my backup $50 chair is totally busted.

Anyone have any recommendations ? It needs to be useful for those regular 18 hour days :)

I’m a bit on a budget, but chairs are usually good for a few years so I don’t mind paying a bit extra. I also have a pretty big discount I can use on any Steelcase chair, so I’m looking at those more carefully.