[Ziyphr]

Vanilla seemed great for a while, but I found integrating it very annoying. Writing your own extensions is extremely hard unless you’re doing something very basic. Having said this Vanilla is good if it can do everything you want straight away. Just make sure you’re capable of theming it properly as it’s annoying seeing yellow posts on every Vanilla install. But their community was very friendly, if a little nontechnical, but this was +6 months back.