These Smartwool NTS 150's are without a doubt the most comfortable underwear I've ever worn.
Only downside (besides the cost) is longevity: my experience has been that they don't last as long.
But hey: everything's a trade-off! If you're looking for max comfort, this be it!
And the great Campsaver price 'took the bite out' of the cost factor!
This review was written in the old system and had content requirements that are different than reviews written today.