I own 3 handguns for concealed carry.
~Smith & Wesson Model 36 snub-nosed revolver chambered for .38 Special
~Ruger SP-101 snub-nosed revolver chambered for .38 Special
~Taurus “Millennium Pro” PT-111 chambered for 9x19mm
All three are convenient to carry, reliable, chamber an effective defense cartridge, and have an adequate amount of support from aftermarket vendors of holsters & accessories.
I like the way you think:
1) S&W Model 637 .38 Special
2) S&W Model 66 .357 Magnum
3) Taurus PT 745 Millenium Pro .45 ACP
All three of which I will lose in a boating accident next week.