I went from over sized boxers to cotton boxer briefs and LOVE IT!
It was difficult and weird in the beginning when I put on the first pair of Calvin Klein cotton boxer briefs. They were tight, but since I've been wearing them for some time I've come to appreciate them.
1) No constant need for readjustment, unlike regular boxers which are normally too big. Even the small sizes.
2) They work much better with a dress shirt that needs tucking in. With regular boxers it was normally a mess.
3) IMO, they look much much better than boxers. Especially if you've been working out.
4) Finally, women love them. Studies have been done and it shows that they favor cotton boxer briefs over pretty much everything else.
Yep, even commando!