It sounds like you want a rimfire pistol and a metal framed centerfire.
Rimfire: I'd strongly suggest a Ruger or Browning 22lr pistol. You can get into a great one for $300-500.
Centerfire: Try a few different guns, including the Beretta 92 you're enamored with. If you still love it after working it (and others) at the range, buy it. A lot of people don't like their overbuilt stature, but they are solid guns. Also check out CZ 75, Sig P220/226, and a Browning Hi-Power if you can get your hands on them.
1911: Between the three you mentioned, I'd lean toward Springfield. I have a couple friends who were longtime Kimber and Colt fans, respectively. Each has changed their tune in recent years, due to some quality issues they've witnessed and encountered. All three make fine firearms...SA just seems to be the safest bet and arguably offers the most gun for the money in my opinion.
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