I recently bought Hanes premiums, 2 short boxer-briefs, 2 long boxer-briefs and 2 trunks (which I found are short-boxer briefs but with spandex in thematerial).
a month in they've all held on fairly well, the long ones don't really ride up unless you do some weird moves. the trunks feel amazing, a lil tight butcomfortable, you get used to the feeling. the short-legged boxer briefs were just normal, better quality than the regular hanes/FOTL.
if you want out of control quality to the point that you never want to wear another underwear again, go with Perofil (Italian) or Zimmerli (Swiss). They areabout 25-30$ a pair.