Thanks for the info, SK, Koala.

Personally, I find the PIs much larger on the sizing scale. The PI chamois is bulky and always feels 'diaper-like' to me. I liked the Descente shorts and bib shorts I tried on, but also found them a tad large, so I didn't buy 'em.

As for the Castelli lengths, I find their tights and knickers are very long, but I'm 5-1 and have no problem with the length of their shorts. My only issue with them are the leg grippers. While I find the YPRO shorts comfortable, the leg grippers aren't very successful holding up my knee warmers... they keep falling down on a ride. Grr! and yes, I have felt the inside seam, but it has not caused me any problems yet.

Castelli tops, yes, are a bit longer in length but I have a longer torso so I am happy with that. Conversely, I find PI tops are too short, so it comes down to matter of preference.

In short (pun!) I can wear a size Small in Castelli, and XS in all other brands. Haven't tried Assos yet, but soon!

P.S. I can't imagine someone on a long ride with the KISS shorts... owie!