a37e19b5____Software_made_the_wiki_way___Main_concern
[Reason] I have a huge user-base and they are grumpy. [Strategy] Go from one LTS to the next. Since the version you are using will be over 2 years old, bugs will be rare. You should at least test (and if possible deploy) before the security-only period so you may detect any bugs, report them (and ideally, you arrange to get them fixed) [Main concern] 
I want the least possible number of bugs
Version Lifecycle | Tiki Wiki CMS Groupware - Software made the wiki way.
Main concern