MetaBB is really one of the best forum's I've ever used, and I say that as a die hard phpBB fan!
It takes in account all of the best modifications available, and still gives out great speed! All of the features are controllable down to the smallest detail, and hey come out with new releases often, which is great!
The support team is reliable and fast, and they offer free hosting which has always been fast, not to mention it has cPanel! I am truly impressed, and I promise you will be too!