I tried on snowboard boots in a store in Olympia Wa. The guy that worked with me was very helpful and had me try on 6 or 7 different boots, in the end I found a pair of Rome fulsoms that fit like a dream. He said that he had been using Burtons bindings for years before a rep for Rome gave him a pair of 390s to try out. He swears by them now, and converted a few others as well. I took his word for it, and glad I did. I have all the comfort and control I need.
I'm a newbie to snowboarding so understand my experience is limited.