Nice guns you have! My experience with .45 caliber began as a pre-teen. Probably weighed 80 or 90 pounds; I don't remember it as a pleasant experience. During my military years (22 of them), I sometimes found myself carrying one. I had never warmed up to that caliber until my shooting buddy insisted I shoot a couple of his about two years ago.
I wound up buying a couple of SIG 45 1911s; one a Target model, the other a MAXX. Nice guns. Wanted to get a SIG 220 X-6 L1, but couldn't get one the last time I tried. Figured I'd try the HK 45s; wound up with a USP45T, a USP45Expert and a Mark 23. All of these guns are shot regularly; they're accurate and reliable. I can never decide, but I think the HK USP45Expert is the best all around, followed closely by the Mark 23. Tomorrow, I could change my mind and think the Mark 23 is best. It's close.
But, my favorite caliber is 9mm, followed by .22lr. I have a few .380s, .357s and .38 Specials. Along with a lone .25.