Well, I'm kind of a real exhib guy, so I LOVE any swimsuit, speedo-type, and esp like a snug and stretchy 'box-cut' suit, squared off at waist and high-thigh that that TOTALLY conforms to your junk. But I know the question was about speedo-briefs, but the same goes there. The snugger and clingier and stretchier, the BETTER! LOVE my bulge being extremely obvious, all details of everything right there! Usually use a little 'helper' cocktie around my balls and dick to help push it out their as much as absolutely possible. I feel totally exhilarated and FREE! I'd love for someone to say something but no one has since my days in Chicago on Oak St Beach, and someone yelled out, 'Hey! YOU in the yellow trunks!" I was at water's edge, and this guy was with a small group of friends way back quite a ways from the water. He was loud enough for everyone to hear and I loved that. My "trunks" were actually and old pair of Bravo underwear with no seams and a little bit transparent so you could see all detail of my cock and balls. And JUST loose enough to allow a little bounce as I walked along. I really may as well been not wearing anything but it was cool feeling like I had everything out there, available for anyone to see, and still be legal. Most of the time folks just stay cool and look--love the gazes from guys lying there with their girlfriends! Have NEVER had any crap form anyone and I just keep on doing it--it is so great being naked, practically, and no one bothering you about it! In fact I'd rather be wearing a smallish extremely revealing swimsuit than actually naked right there on the beach.