Genuine question.

I've rolled the dice with this my whole adult life. Brief, boxer, pantyloon. So many options, so many materials. No guidance as to which is the best, if any at all.

In my studies, I have realised I am not a fan of the following:

1. The underpant getting bunched between the thigh and the side-scrote.
2. The underpant attempting to divide my buttocks.

Please also note, that the discomfort experienced when having pulled your underpants up without having aligned them symmetrically before covering them with trouser layer is a genuine cause for concern and anger.

What don't I know that I should know?