I completely agree. I switched all my forums over from phpbb2 to SMF. I havent tested SMF enough to say what I think about it. I always wanted to try vBulletin. Never had the money or the real need to make the switch. I have never herd anything but rave reviews for it.
Only reason I mentioned phpBB2 is that with guilds for games such as WoW it is still good. Many mods available that are hard to go without. Most of thoes mods are made only for phpbb2 and are not the easiest to port. www.immortalityguild.com
for an idea of what I am talking about.