When I'm not wearing a kilt I'm usually wearing jeans. Lots of jeans dissing on this group but I still find them comfortable..."dockers" are right out and "relaxed fit" jeans need not apply. Quite a while back I got locked into wearing the solid colored briefs with a medium rise and no trap on the front and those have been the most comfortable and practical underwear solution that I've found. I think that the "no trap" part is what makes them workable...they keep everything in its place, have minimal seams and the waistband is lower than the waistband on the jeans so there's no problem with two layers of fabric bulking up at the waist.

Best,

AA