I am very sympethitic to our friend above with size 15 boots. While there are some 15 boots that do work well, there are others (especially older boots) that do not. Size 14 and down in modern boots all fit easily.
Thank you Wiredsport. It sounds like you are in the rare and unenviable position to sympathize. While I suspected that boots may have gotten more compact over the past few years, I hadn't had this confirmed. Do you also wear a size 14 shoe? In the past I had found many snowboarding boots to fit at least a half size less than advertised. I really hate to replace my boots as they are still in good repair, but it would appear that a new pair is on my horizon if I am to use any of the newer bindings.