It's hard to compare any board and say one is better than the other. Above, at least to me, you're comparing apples to oranges with free to paid. IPB has some great features and I use it and love it on my largest site. However, I use MyBB on another site and love it as well. If you want a forum with many mods and a large community behind it then IPB is the way to go - either that or phpBB (free but has security issues from time to time). I'd also look at SMF - it's smaller but growing quickly.
MyBB is good looking, simple, and great if you're just looking for a board without all of the bells and whistles.