I wear bow ties frequently and typically wear the standard size. I would also say that the size can vary based on the collar style of your tux shirt. A wing collar could use a slightly smaller tie, while a pointed collar would be better suited for the standard tie or even a four-in-hand tie. Beauties in Vermont offers the three sizes you mentioned. Jos. A. Bank is another option for them The have self and pre-tied bow ties. Good luck!