A friend of mine recently took an early retirement from the Canadian Armed Forces. He's asked me several times to get certified so I can go to the range with him. I've decided to take the plunge. I've been researching 9mm (cheaper ammo) pistols and have decided on either the SR9 or the 9E. The biggest difference I read about is the material used for the slide, the 9E being carbon steel. I would appreciate any input the more experienced shooters may have. Will this make much difference???? What about wear ??