Oh My Neal! I LOVE the Romantica series. I have all except Abbey de Cluny and Classic Woman. (and Bolero..)
I would say start with Pink and Red Traviatas. I think Palatine lists a few. Last fall, when it got so cold so suddenly, my Red Traviata took a hard hit. It died to the ground. It magically came back this spring, and by June had blossoms and was 3 feet tall. Now it is 6 feet tall and still blooming. I think they're all good for zone 6 except for Classic Woman. (not sure about Classic Woman)
Let me see if I can post a few pictures. It's windy today, which makes for blurry pics, but I'll see, maybe I have some on my phone.
edited the goofy typos...
