I ran Arch flavors for a while, (Endeavor, Crystal, Garuda, and mostly CachyOS) and I eventually got tired of the tinkering, so I’m back on Opensuse now. Benefits of the perks of rolling release with less tinkering than Arch.
I personally use Tumbleweed, then I use Slowroll on my media PC and my dad’s laptop.
I don’t miss AUR. Well, I do but opensuse has OBS. Technically OBS is better as packages can be rebuilt automatically when dependencies are updated, but there are a lot more users on the AUR than OBS so AUR has more stuff on it.
OBS packages are less likely to break your system in an update, but the AUR is just flat out bigger.
There hasn’t been anything I’ve needed that I haven’t been able to find either on OBS or as a flatpak. When something isn’t in the disro repos, I look for a flatpak first, then check OBS. Mostly cause flatpaks are easier to search.