The Under Armour HeatGear Boxer Briefs are awesome. Snug fit, very comfortable. They are worth the price. Once I tried these, I never used cotton briefs again.
A quality product not built by LLBean, but sold by them with LLBeans' satisfaction guarantee.I already have 2 pair, and love them. I bought them for outdoor activity but they are quickly becoming my everyday brief. It takes a lot in order for them to "ride" up my leg, and they keep me well ventilated.
This undergarment is comfortable, keeps you cool, sheds moisture well. I was expecting them to be a little snugger, based on other comments, but the fit is still good.