I'm considering a Shindeshojo or a Chishio Improved for our yard. I prefer the pinker tones of Shindeshojo, and from what I've seen of older trees Shindeshojo also seems (?) to have the more open, graceful form. I'm hesitant, though, because on the Dave's Garden site it says it's only for zone 6 or higher, and a commenter says it's one of the weakest JM cultivars. Is there such a thing? Anyone growing Shindeshojo in 5b or on the cusp of 6a? If you have Chishio Improved, what do you think of its natural form? Also, could anyone compare the summer leaf color of both? I'd like a tree that gets as close to true green (not red-green) as possible.