Mint, after about 20 years of Linux. I think I tested a bunch of Linux distros about 2006, and settled on running Ubuntu v6 on an old laptop for occasional use and learning. Ubuntu was brown and it looked beautiful. Later, I dual booted Ubuntu and Windows XP on my main computer from about 2008 until about 2014ish - I remember being annoyed that I had to install some launcher thing called “Steam for Linux” so I could play this newly released Linux game called “Crisader King’s II” (I was sure I’d never use this “Steam” thing for anything else). 2 laptops and one desktop bought since 2014 have been Linux exclusive. The old desktop still chugs along on Ubuntu, having been upgraded through versions for over a decade, and somehow still works. The old laptop and newer laptop (my main machine) have only ever run Mint. Turns out that “Steam” thing was quite useful.