Will you carry, or just for shooting? IMO, the full size is the way to go. The grip size is the same as the full 5 inch. Only difference is the about an extra inch in length. That extra length is not that big of a deal for say an IWB holster as the extra length is hidden in the pants. Key factors for IWB carry or OWB for that matter is the grip size and the thickness of the gun. The thickness is the same and grip size is too for the full and commander sized SR 1911. If you don't carry the longer gun (5 inch) will shoot a little more accurate too.