Manjaro KDE for years. I've tried ubuntu, Fedora, Mint, Debian, Antergos and plain ol' Arch. I've stuck with Manjaro for simplicity sake, going through the motions of installing and setting up Arch was great from a learning perspective. It gave me a much better understanding of what's under the hood. In the end though, I wanted a simpler process of getting an OS going.
I use Pop OS right now but I'm goung back manjaro soon. I'm avoiding Arch because of how annoying it is to install it. After doing the whole install for like the 4th time I just can't anymore. It should really have an option to just use a proper installer as well.