Top, they're really not similar at all but they shared a name at one time! RoseHeart starts out a dark pink and fades quickly and dramatically from the outside in, gorgeous! And Bess Bockstoce is a beautiful light pink double that really doesn't fade much at all.
Several of us have RoseHeart, it was sent to me as a bonus with my Gold City order this year as well. Was thinking that was quite generous as they're normally around $40-50 each but when I unwrapped it the root was in 3 small pieces…if it was planted here I'd gladly unearth one of the little roots and send it, I already have a large one somewhere, anyway, but it's in AL and I won't be back there until Dec.