Have you considered using Debian?
Personally, I prefer to run regular updates often and full-system upgrades rarely/never, but I also want to use software that isn't ancient. The LTS model gives me half of those things.
I don't know if that's what you're hinting at with your comment about newer kernels, but I've found the testing and unstable branches of Debian to be a far more pleasant experience overall than Ubuntu (either the LTS or the full-upgrade-every-six-months variants).
They're both rolling releases. Don't let the names fool you... If you follow a small handful of best-practices (e.g. enabling apt-listbugs) they can be quite stable. The system on my old laptop has been running without major issues for almost a decade.