How much of a difference does the shorter 4" barrel make in terms of recoil and aiming the gun? I was set on the Custom II with night sights then i started browsing their site and came across the Pro TLE II/RL II. I currently have an XDm 3.8 so I have a shorter barrel gun for every day carry if I choose to carry. I've fired full size 1911's before and that's what I started out looking for but now I'm having second thoughts after I saw this Kimber. Anyone have thoughts either way? If you have experience with them can you please list a few pros and cons of each? Thanks!