Mint. I’ve been happy with it. I’m more familiar with debs/apt/Ubuntu so I wanted to stick with something familiar but didn’t want to use Ubuntu. It’s worked very well for me for gaming. I just upgraded my GPU from an Nvidia card to an AMD card which, aside from having to manually install the drivers from the terminal, has worked very well.

Biometrics are a terrible security feature IMO. MAYBE if used in conjunction with other things like a username and password, but never on its own.