I'm in the same situation: The answer to your question, like it or not, is NEON or wait for Kubuntu Backports. Another answer to your question is to switch to a different base, like Arch.
That said, you should reconsider NEON. You might appreciate the following discussion:
And consult this link for installation:
(Though this too is outdated, see below):
There are three repos, two of which are GIT based -- stable & unstable.
You and I, it sounds like, will both want to use user. If you're like me, all of the reviews and comments you've read concerning NEON's stability were probably based on 15.10 and are outdated. Currently, NEON is advising against adding their REPO to Kubuntu. However, based on the conversation linked above, good results have been had and the systems are stable. That said, this Jujutsu is for the Linux user comfortable with tty or the command line (in the event of an emergency).
Of course, the simplest thing to do is install the USER edition of NEON. I know that's a hassle if you've got your Kubuntu installation all dolled up, but do it once and you'll be done until 2020 -- or some such date.