Originally Posted by Lpspider

It all depends on what you want and how much you're willing to pay.

Vbulletin is liscenced, and I hate it for that. If you buy a liscence you have to renew it or your forum will shut down - when contrasted, Invision software you must buy a liscence as well, but you can still use the software.

Personally, I preffer phpbb because it's free. Easy to use and customize, but obviouisly, if you pay money, you're going to get more and better features. Phpbb is generally better for beginners, but it depends on taste.