Curious if something's acting odd - would be interested if you could attach a screenshot. I'm mainly a laptop user and the layout feels fairly dense here, although the posts will stop getting wider at a fixed point (which is usually for readability, think you're ideally supposed to have 50-60 chars per line!).
This is Xenforo 2.1's default theme with some coloration so it's not a preference thing/my choice... Think they put effort into making sure this layout can scale from phone to tablet to desktop.