I initially didn't want to pay these kind of prices for a pair of briefs, but after biting the bullet and travelling with a couple pairs of ExOfficio Boxer Briefs, I'm a believer.  They really do make a difference compared to cotton or even some other "breathable" briefs I've used. They are cool, comfortable, and easy to move in.  And really, there's no comparison for ease of washing and drying if you want to travel light.  These things will dry in a matter of hours, rather than days.  Highly recommended, now I just have to figure out how to afford replacing my other briefs with more of these...