Forum/Bulletin Board Recommendations?

[Kimball Larsen]

I'm looking for a good forum style thingie to set up, and would like  
to know what everyone recommends.

So far, I've poked into:
PHPBB[1]
VBulletin[2]
KBoard[3]

I'm not really sure what my requirements are, other than that I would  
prefer it to be written in PHP and use MySQL, but I'm open to other  
options.  I guess I'm wondering what everyone else out there has  
used, and why they liked it.

Thanks!



1: http://www.phpbb.com/
2: http://www.vbulletin.com/
3: http://www.halo43.com/kboard/


-- Kimball