The way I understand it, the LTS releases will continue to get security fixes for the kernel used in the releaes. But most software will remain at the old version it was when the LTS was released, but they apply security fixes to the critical software. So you have stability for a long time in LTS releases, but the tradeoff is that you will be using older software versions.
If you follow the 6 month release cycle and get each new version, you have newer software at the risk of encountering a few bugs. However, if you wait with upgrading to the newest version until a few months after release, then I would bet they have fixed any serious issues.