Ive race a few ironman distance triathlons in the Desoto Forza bib.  A few key reasons put it at the top of my list: 1-comfort: this bib has never chaffed me on the many 100+mi bike rides and brick training/racing. 2-fit/compression: they feel good and keep my legs feeling fresh, 3-minimal but effective chamois pad: it provides what is needed on the bike and i never feel restricted or like I'm running with a diaper between my legs, 4-pockets: 3 pockets can each accomodate a 7-8oz flask and that means i can run a half marathon off the bike with all my hydration/nutrition needs with me, without the need for and hydration belt. 5-durability: they are built for use, not just for looking cool!