Well, I only have two S&W semis......
....and a Kel Tec. So
Top on the list the 5943 third gen. Aluminum frame so though full size, it's carryable. But then. It's a great shooter as well way beyond SD distances. I hope never to part with it.
A close second would be the Shield. Why? It's a gun in a million (literally) The trigger is superb. Take down is easy. It's very concealable/carryble, it's comfortable to shoot and shoot well.
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Way down here is the Kel Tec P-11. A good gun, good design. No fun to practice with. Made for for scaring perps by shooting AT them instead of hitting them. It's like a pair of dime store pliers that you keep in your kitchen drawer. They work on the little stuff.