I've been doing my first journey w Linux as a daily driver and I'm not loving Mint+Cinnamon, what's the best distro for KDE?
- You can install KDE on Mint without switching distro or reinstalling[0]
- Debian (caveat: packages can be out of date if you need the latest-greatest of something)
- Fedora (caveat: two major OS upgrades per year can feel like a chore)
- EndeavourOS (caveat: Requires a bit more expertise and grease to properly maintain)
- Aurora (caveat: Still young project and I'd still consider it a bit experimental and adventerous)
- kubuntu (caveat: snaps. Accept them or learn how to disable)
KDE Linux is a thing and something to keep an eye on but it's still in alpha/beta and probably not ready for your use just yet.
[0]: Caveat: it's possible that some DE service might not be disabled properly from your old setup and conflict with KDEs variety if you keep the cinnamon packages around
I'll probably go with Kubuntu just because I want something as vanilla as possible with the largest support-base.
https://www.fedoraproject.org/kde/
Ubuntu based distros are fine too, but there are a few weird things to get to grips with like Snaps.
There's really not much difference between most distros these days so I'm sure if you like one you'd like the other.
As a bonus, if you don't want to build everything from source, there are prebuilt packages available. Instructions for how to use them are in the "Installing the base system" section of the Gentoo Handbook. I've not used the Gentoo-provided prebuilt packages, but I do use my own prebuilts. I've found the process of using them to be well-documented and fairly straightforward.