These are insanely comfortable and provide the support I want in a pair of briefs.  It basically feels like you're wearing nothing throughout the day.  I can't stand the feel of a waistband close-ish to my belly button; these briefs are cut low as a low rise brief should.  These are also very flattering to your package (especially in shorts) while managing to provide some restriction so you're not flopping around everywhere like in pouch style briefs.

I wear these under nylon shorts for yoga and can happily say these do not rise up throughout the practice.  These also do not seem to hold on to odors from sweat, even washed on a delicate cycle.

My only complaint is the waistband feels slightly loose on me.  I wish David Archy had an XS size I could try as I feel that overtime, the waistband my become too loose to wear comfortably.