Well, for starters bib shorts are FAR more comfortable as they don't have a waistband that pinces uncomfortably around the waist. My size tends to fluctuate a bit depending on the time of month and how much I've been able to ride, and if I'm having a "fat day" or am bloated I don't feel as uncomfortable in the bibs as I do in shorts (in fact, I don't feel uncomfortable at ALL---on days like that it used to be enough that I just wouldn't ride, now I don't have that excuse).
They also give me a slimmer look than plain shorts since the bibs don't have a compression around the waist. but flow straight on through.
I went ahead and ordered another two pair of the Boure's and sewed them up the middle. They're wonderful! But I still wish that Terry (or SOMEONE) would come out with a pair already designed like that, since their shorts fit snugger in the seat than what I've managed to get with the Boure's. Still, I like these well enough that now I don't wear regular bike shorts anymore, despite having a drawer full.
The only drawback to bibs is going to the bathroom in the woods. You have to take your arms out of your jersey to get the straps down. Other than that, BIBS RULE! (And quite frankly having to go to the bathroom in the woods sucks anyway, bibs or no bibs.
