I got to handle the two smaller .45's side by side yesterday (G30 SF and 36). The 36 feels very comfortable, but not worth the 4 round tradeoff for my purposes. If I really just had to carry a .45 ALL THE TIME I'd probably go with the 36. Nice gun. Anyway I got into a little argument with the little cute chick they had working the counter. She tried to tell me the SF stood for "slim frame". I told her that I thought it meant "short frame". She told me I was wrong and smiled at me condescendingly (like most of the staff there do- hence the reason I don't buy from them unless I absolutely have to.) So anyway SF means "short frame" and refers to the length front to back (not the width) of the grip, correct?