Beats Kubuntu I guess, although I never really understood Neon’s appeal besides being a testbed. As far as “rolling” distros go, I think there are many alternatives that are more rolling and less rocky - as evidenced by the almost flawless transition from Plasma 5 to 6.0.1 on Arch. I also want to point to Sparky Linux’s “semi-rolling” release as a fantastic alternative based on Debian’s testing repos.