I made a post a few days ago asking your opinion on Manjaro and it was very mixed, with a slightly negative overall opinion. I heard some recommend EndeavourOS instead and did some online research and it seems to be pretty solid and not have the repository problem that Manjaro has.
Just for context I am a Linux noob and have only used Mint for about the past six months. While I don't have any major complaints, I am looking to explore more distros and the Arch repository with its rolling releases. I am not a huge fan of how certain packages on apt are a few years old and outdated. However, I also don't have the time to be always configuring my OS and just want something that works well out of the box.
Is EndeavourOS a solid choice?
I'm running EndeavourOS on a little Ryzen box I got for a desktop. It's fine. They have their own mirrors hosting some different core packages than base Arch, and it seems pretty stable. I haven't had any issues other than some missing PGP keys once.
That said: I've been using Arch-based distros for a while - I have a half dozen different servers running Arch, and a laptop running Artix. After installation, I haven't used any EndeavourOS tooling. I do most maintenance from the command line, and I use a tiling window manager. So my experience doesn't really stress test the EneavourOS configuration, or any of the tooling it provides.
TLDR; It's stable enough.