Tuxedo OS, as preinstalled on my Tuxedo machine. It is just a heavily tweaked Ubuntu flavor with Plasma as a default desktop and sane defaults (firefox not as a snap, but as a .deb file). Everything worked so well out of the box that I did not see the point in installing Arch. I also love the fact that Plasma is kept very much up to date. In comparison, Kubuntu 24.04 still has Plasma 5., whereas I currently run 6.1.4.

I bought a Tuxedo two years ago. They have affordable (and highly configurable) Linux laptops, some of which are aimed at gamers.

https://www.tuxedocomputers.com/

What is your definition of stability? I have used Arch for about ten years without any major breakage, but sometimes you do have to do some manual tinkering if a package stops working. So it’s stable enough for me, but maybe not for others. Since it is a rolling release, packages are generally being updated quite rapidly.

I think that any modern rolling release distro would fit the bill though.