I have always been drawn to the 19 because of the size. Is the 17 that much more capable. I have heard a lot of people say the 17 is just easyer to shoot good groups with. I have small hands and I'm 5-3" 140lbs so trying to carry a full size gun is hard enuff. Which is not by primary resone for this gun I have a Kahr cm9 for EDC. So the glock will be for home defense, pistol classes that I want to take and range and most of all more fire power then the little cm9. So if you where to only get on would it be the 17 or 19.