I'm reviving this thread for some clarification.
When (for the purpose of this thread) we talk about "comfort" what are we talking about exactly? It looks like, butt and sweat are the main points of concern. I don't have problems with that, but do have a problem with my junk getting wedged in the front of my pants when riding.
Within the last year, I've lost more than 50 lbs. The problem I have now is my junk won't stay in place when riding. When I move around in the saddle, the back part of the seat tends to slightly pull the back of my jeans up (I believe this is what is happening). This in turn pulls the front of my jeans down, along with the underwear. Resulting in my junk being pulled down and it gets all bunched up. I end up having to do several "package checks" to get it back where it's supposed to be. I've tried loose and tighter underwear, with little success from either. I've tried different styles: boxer, boxer briefs, whitey tighteys, seamless, bikini style, etc. None have made any noticeable difference. These were all regular off-the-shelf drawers from big box stores. I haven't tried any of the higher end solutions listed here but would like to find a solution.
If anyone has/had this problem and can recommend a solution, I'm willing to give it a try.
Anyone else have this issue and have any of these underwear solutions mentioned in this thread help that?