OpenSUSE has the whole OpenQA thing (<https://openqa.opensuse.org/tests https://openqa.opensuse.org/tests>), although I think bugs may occasionally slip through

OpenSUSE has the whole OpenQA thing (<https://openqa.opensuse.org/tests https://openqa.opensuse.org/tests>), although I think bugs may occasionally slip through the cracks. I tend to bounce back and forth between Arch and OpenSUSE Tumbleweed (currently on Tumbleweed because I wanted SELinux and setting it up on Arch is a bit more involved than I like), and aside from the KDE 4 to Plasma 5 transition I haven't had any major issues with either one (though I suppose if I had, booting from and restoring a snapshot on Tumbleweed would have be easier than on Arch because Arch overwrites the kernel while Tumbleweed keeps up to... I think 5 versions).