Zuzu, one other thing I'm noticing is the plants from Palatine on multiflora rootstock grew faster for me this summer than the bare roots from Chamblee. i know you have said this all along, but this summer i had side by side comparisons because I accidentally ordered 2 of the same plant, one from each place, and the difference was amazing. The rootstocks look like they are much more mature than the scions, and that helps, i guess.
Chamblee is listing several of the newer roses, and I'm wondering if anyone has field trialed them as own-root plants.