Yup, I use Tumbleweed and it seems to get updates as fast or faster than Arch most of the time, and it seems more stable to me. I used Arch for ~5 years and Tumbleweed for 3-4 now, and I've had to fix Tumbleweed much less (and each time was a simple snapper rollback and try upgrading again in 2-3 days).

When I used Debian, I would stick on the next stable (i.e. testing, but with a named release) until a few months after the release. For example, if I was on Debian right now, I'd probably be on bookworm (old testing, current stable) for another month or so, then upgrade to trixie and stay on that until a few months after trixie releases. Debian testing tends to get pretty unstable right after a release as a ton of things get merged from sid after the freeze, so I give it some time to stabilize.

Both are great. I just found I'm not a fan of how Debian does certain things and I generally prefer Arch and openSUSE.