The ones you link are absolute garbage that buy their rating. They will go flat in about a year. If you invest more you can get a chair for basically life.
Steel case
HON
Hermon Miller
All are top brands, stupid expensive new, worth, but stupid expensive. My advice is to go to office resellers. They have some in pretty much every city. You can find killer stuff even if it’s not the best brand. But most are actually quality. All at about a third of the cost you’d be paying new. Which sort of ends up about the same, or a bit cheaper than Amazon crap.
I've been using a mesh chair for years, and I'll never go back. Love it. I'd recommend going to an office supply store if you have one locally, and sitting in a few. They have wildly different arch support and neck support and whatnot from chair to chair; buying one sight unseen might not be good if you're getting back pain from your current one.