Well I have been a believer of the .45acp for years. I have had a xd45 service and recently purchased the wife xd9 service model. Well I took both out today for side by side comparison. Well I like the recoil on the xd45 more than the xd9. The xd9 seems to have more of a muzzle flip compared to the recoil on the xd45. It seems to me that with the xd45 actually recoils into the hand more than the muzzle flip. I think this has made it final for me my next xd will be the xd45c. I could just imagine the recoil on the xd40 would be very compairable to the xd9 just a little more snap.