Thanks for the suggestions, ladies!

I snapped up a pair of Castelli Trilly Due knickers from TE with my 20% coupon. It sounded like their chamois is on the thinner side, and I really like the other Castelli stuff I have (no shorts though), so we'll see. They should be here today! If those don't work, the Ibex will be next on the list.....

As an aside, I love that TE has detailed chamois info for their products- no other site does this! I'd love to see actual measurements too....thickness, width, length.