Well, I'm going to see what the new infopop product is like.
I have no plans for changing from threads at the moment.
phpBB I wouldnt touch in a million years as it's basically crap with weak security.
vBulletin i'm already running, but i HATE the admin interface, it's too complicated.
Fusion bb, I think looks too much like threads (ie, dated).
Invision board, I just dont think it's that friendly from a users view.
Yabb, well, I personally wouldn't use a free BB (like phpBB) as I just dont trust them, had my fingers burned in the past.
And that covers most of the competition TBH!
Roll on infopops new product. If it looks modern with good features and is secure, then I'll be sticking with them
