Dude, I'm thinking your Hormones are running rampant, and Testosterone through the roof....only seriously? Seems that is a Huge difference in size to have to really think about. For me seems 12" too large for any part of me and well 3" just is kind of creepy...So I guess I would prefer a couple inches larger that your smallest and a couple inches less than you foot long choice. Somewhere between around 5 and 7 seem to suit me...
Random act of Kindness: --> Hold the door for someone today==>> When Your already running Late!