On a whim I bought two lesser known (at least to me) Hybrid Perpetuals from Rogue Valley: Heinrich Munch and Paeonia.

Does anyone have any experience with these? I'm especially interested in hearing about Heinrich Munch. Vintage's catalog indicated that they believed Heinrich Munch to be the same as Arrillaga. The descriptions of the flowers are very similar, but the plants are different. Heinrich Munch is supposed to be 5 feet and thornless while Arrillaga is roughly twice that size and presumably has thorns.