Colt. Specifically, full-sized, all-steel Government Model-sized. Easy on my aging hands; steel damps recoil nicely, when firing the gently-accelerating .45 ACP. My first handgun, at age 21, in late 1982 or very early 1983, was a 1911, so, the 1911 design has seniority. I was mentored well, so, am comfortable with the 1911 trigger and safeties. Long before I could buy handguns, I was a history buff, and, well, “two World Wars,” and of that. During my LE career, I used 1911 duty pistols for about seven to eight years, so, have carried the 1911 into harm’s way. What’s not to like? I would swap for a flat main spring housing, as necessary.
I have much residual affection for the SIG P220, but, my days of pulling long-stroke DA triggers are past history, as of early 2024. Notably the P220 I loved was the earlier version, with the heel-clip magazine release. The newer version did not fit me quite as well, though, if I recall correctly, at least one aftermarket grip option was quite good. So, I could buy. P220, again, and be happy with it, except for not being able to train adequately for the DA trigger pull.
The S&W is a bit large, in my hands. I believe that I could handle it OK, but, a 1911 just fits me so much better. Fit is a personal, individual thing, but the way the poll and OP are phrased, I was not asked to factor-out personal fit.
I never liked the feel of the Ruger P90. Plus, again, a 1911 just fits me so much better.