Tumbleweed is good for a mostly stable, clean KDE distro, but I wouldn't recommend it for gaming or codec integration. The first-class btrfs snapshots are probably my favorite feature.
I want to have VMs that are kind of like Arch but a little bit more stable, yet have very latest versions of everything I need with minimal risk (no need for the bleeding edge at all times; Manjaro does this semi-okay with its two weeks grace period).
But "stay on an older version to be safe" is not the panacea many try to pretend that it is. Way too many bugs and security vulnerabilities on old versions as well.