For decades I wore 16 1/2" neck OCBDs. Now my neck measures exactly 14 1/2". My collection of four OCBDs still works fine for open collared casual wear, but I am pondering possibly getting a second blue one for wearing with ties. I wash and iron my own shirts and do not starch them. I am on the fence between 14 1/2" and 15". I don't want to be uncomfortable (that's my mantra), but I don't want a visibly ill fitting shirt and tie. What are your thoughts on this very serious and important matter?