I would recommend the Springfield Armory M1911-A1 45-ACP.
Would already love the feel of the M1911-A1. You will also have more stopping power with the 45-ACP than the 9mm.

I carry a Springfield Armory XD Tactical model 40-S&W. I love this gun. You might want to shoot a XD before you buy a M1911-A1?