Been shooting .40 through my stock glock 20 barrel for a little while now (no lectures please), and just love how it soaks up the recoil of the .40. To me, it is the best .40 pistol I have ever shot. So, I have decided to go ahead and buy a KKM or Bar-sto conversion barrel. This pistol will be for plinking and HD. I know some folks would never rely on a pistol with an aftermarket conversion barrel for HD, but if I can shoot 1,000 hiccup free rounds through it, I will be totally fine with it. My goal is to have the softest shooting .40 pistol possible. To that effect, will getting the 6" conversion barrel over the 4.6" barrel make a large difference in terms of recoil? If it is not a really noticeable difference, I would probably rather just stick with the 4.6" barrel. Assuming that blinding muzzle flash at night is not a significant issue, would the ported 6" barrel be a huge difference (in terms of recoil and muzzle flip) over the 4.6"? I have heard conflicting reports over the impact of the muzzle flash using the ported barrels. Many say that if you are using a low flash round, that it makes no difference whatsoever. Thanks!