On my side I'm here since 2006/2008 approximately, I passed by phpbb, SMF (not bad), vb5 at the level of the arcade that is very very null or rather lack of levelling, except strangger5 which is also a good coder seen the quality of its site.
In short, since IPBcoding, I have not found anything better.
I'm very satisfied with it, congratulations to tubesock, Legionaire.
Personally I don't think I'll change anymore, it's very good like that and then given my age my nerves start to be put to the test.
Sorry, if the text is not very clear I use a translator.