What version of PHP should i be on?

[RobParker]

My statement is still 100% accurate - XenForo does with with PHP5.5.

We cannot be held responsible for third party add-ons.

Not going to argue but it's probably the difference between being 100% accurate and 100% helpful

 

[digitalpoint]

If addons don't work with 5.5, I'd consider them broken and needing to be fixed by the author.