Which forum is good and bug free for elgg?

Dear friends,

Finally I am going to try having forum on my elgg site, first time I will try forum. I would like to know which forum is best so far for elgg at the moment? Has anyone tested any forum plugin which is bug free and works fine? I am using elgg 1.8.8 with default theme.

I would like your suggestion, as I can see there are some forum plugin already shared here inculding Vanilla forum.

But I don't know which version is okay for elgg 1.8.8?

Please guide,

Many thanks in advance