What is the best Mac OSX to use with Rekordbox?

I currently use Mojave 10.14.6 which still supports itunes, and have been wary of upgrading operating system as I heard there was issues with the new version of itunes "music" syncing up with Rekordbox.

Unfortunately I'm now at the stage where I need to get a new computer, or at least update this one, and wondered if this problem still existed, or what people recommended as the best OS to run with rekordbox to enable all the features to work?

Thanks