Hmmm...after looking at the chamois pics Catrin posted...it appears as though I already have a bibshort with the PRO 4D chamois. I have one pair from this year, and another pair from 2008 with the PRO 3D chamois.

However, I went to the PI site to compare the men's & women's PRO 4D chamois...and I found a pretty significant difference, especially in the "up front" area. On the women's pad, it looks like one large, solid piece of padding right in the middle of the crotch (where the soft tissue would be). But on the men's version, the padding in the crotch area is much thinner and is also split with a channel running down the middle of the pad. I'm wondering if the men's version might be a better solution for those of us that have issues with the women's padding bunching up in the front?

Here are pics of both PRO 4D chamois pads -