I'm curious...why the switching? Is it a different style for different situations or just what you pull from the drawer?
Boxer briefs or boxers or commando for me. I like the relative freedom which means less adjustment needed during the day. Commando in spring/summer when erections are more frequent, though, if the trouser material is too light-weight, I may need to sit in the car for a few minutes, to let things subside, before going into a supermarket (for example).
“Chicks dig me, because I rarely wear underwear, and when I do it’s usually something unusual” - Private John Winger