I will add my opinion perhaps from a different demographic: 48 straight married that’s very hung with a big limp hang and heavy saggy balls.
Normal wear: I prefer old school boxers. They are getting harder to find the way I like. I don’t like the ones with tons of fabric, so I normally go down a size to help with that a little. I get a size small. Reason - I prefer to let my cock hang down my right leg without any restrictions so that it can move and swell as happens throughout the day. Briefs or boxers briefs hold it, which is uncomfortable if it swells at all.
Exercise: briefs from David Archy also small - DAVID ARCHY Men's 4 Pack...
https://www.amazon.com/dp/B00QT8YFL2?ref=ppx_pop_mob_ap_share they don’t have a sewed pouch, but they hold my balls in place, which saves me. Reason - If I don’t have proper ball support, after I workout, it basically feels like someone kicked me in my nuts.
PJ: medium old school boxer shorts
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