I also use a SIG full size P220 in .45 ACP. Still have my 1911 A1, but that SIG is just a beautifully put together gun, 100% reliable and super accurate. The 1911 A1 has the nostalgic feel and look, and shoots well, but I much prefer the SIG now. I also love the Browning Hi Power in 9mm for a less powerful round. As in many things, including my several nice side by side pre war German 16 gauge guns, it's whatever floats your boat.