I have the Descente Strata, and wouldn't trust it for a really long ride. The chamois is thin, but fairly stiff. It always seems to feel dry, even after lubricating with a chamois cream. This is not good, as on a long ride it feels like it rubs, even after a lot of sweating. The short itself is on the short side, which is ok if you like that, I don't. And the leg openings feel skimpy, maybe because the elastric grippers are tight. Not my favorite.

I like the Etxe Ondo very much, have the Sann in the bib style. The leg grippers are comfortable, none of the death-grip stranglulation. I have both the red, and the white, each of which have a slightly different chamois. The red ones came with the newer chamois, which is probably more what you are looking for. It is thin, with a channel in the center so none of the chamois material pushes up into the private parts. There is no padding along the inner thigh, just some chamois cover material to help wick. The shape seems just right to drape over a saddle naturally, so nothing sticks out to rub or irritate on a long ride. The chamois in the white short is the older style, which does not have the channel or the unpadded inner thigh area. It is comfortable, but I prefer the new model. If you select this short, I would definitely make a phone call to make sure it has the new Raicor chamois.

For a very long ride, I grab either the red Etxe Ondo with the new chamois, or my Assos. The Descente Strata I leave for training rides.