I really like both the 140lb and the 90lb weights of Arches Aquarelle. Needs an acid bath, but great paper. The 90lb has phenomenal wet strength, a very slightly warm base and light linen texture. It feels almost as thin as the Weston parchment but is infinitely stronger. Great for kallitypes, so I assume it would work for pt/pd.. I used to use Platine but the stuff is like a shingle.