Debian Testing has a lot more current packages, and is generally fairly stable. Debian Unstable is rolling release, and mostly a misnomer (but it is subject to massive changes at a moment's notice).

Fedora is like Debian Testing: a good middleground between current and stable.

I hear lots of good things about Nix, but I still haven't tried it. It seems to be the perfect blend of non-breaking and most up-to-date.

I'll just add to: don't believe everything you hear. Distrowars result in rhetoric that's way blown out of proportion. Arch isn't breaking down more often than a cybertruck, and Debian isn't so old that it yearns for the performance of Windows Vista.

Arch breaks, so does anything that tries to push updates at the drop of a hat; it's unlikely to brick your pc, and you'll just need to reconfigure some settings.

Debian is stable as its primary goal, this means the numbers don't look as big on paper; for that you should be playing cookie clicker, instead of micromanaging the worlds' most powerful web browser.

Try things out for yourself and see what fits, anyone who says otherwise is just trying to program you into joining their culture war