[TYPO3] powerful forum (messageboard) tool?

[dave typo]

I've been using the WEC Discussion board extension on my site, but it
is very limited. I was thinking of using phpBB but I don't really have
any confidence in the extensions that are available (or the lack of
their documentation).

Has anyone had any experience setting up a forum on a typo3 site with
success? what is a possible solution?

could someone share their experiences & suggestions to what the best
messageboard solution is?

AND is there a forum that is compatible with the FE user registration
extension  	(sr_feuser_register)?


thank you,

-dave