Well...I wanted #3 but the calf circumference is only 12.5" and my calf is about 15 or 16 (big calves) so pretty much the ONLY one that fits would the #4 :(
But I am planning to get the brown Miss Sixty dance boots (fingers crossed that they fit my calves) so I guess I can handle a plain pair of black boots for work as lond as I have those beauties. :)