i would prefer the typical standard forum. I like to have it a bit more organized then in the MoI beehive. :)
Do you tried the FUD Forum http://fudforum.org ? It has some nice features like a buddy system, post tracking, sending notification via ICQ/eMail, creating of PDF, RSS feed, etc. and it's Open-Source.
I hadn't seen that one before. It looks interesting, but at first glance it seems to have the same problem common to many forums - the list of threads is on one single page all by itself instead of being in a separate frame to the left, so frequent navigation back to the thread page is required.