I shot a Kahr CW9 (not CM) and honestly I wasn't blown away. The magazine seemed to be pretty chintzy in quality and the build quality of the gun was not especially great. That said, it did fire without error.
Maybe I just got a well-worn range model, but I'd be interested in comparing the C line to the P line.
The G26/27 I have plenty of time with, and it's a very high quality pistol, just a bit bulky.
As for the PF9, I'm not especially comfortable with Kel-Tec. Maybe the Ruger LC9, but even it has had troubling extractor issues.
Of what you listed I like the G26 best.
Beretta PX4 .40 S&W - Beretta 92FS 9x19 Para - Rock Island Armory GI 1911 .45 ACP - Colt 1968 Detective Special .38 Spc. - Ruger LCP .380 ACP - Daniel Defense M4V1 Carbine 5.56x45 - Alpine Industries M1 Carbine .30 - Steyr-Mannlicher M1895 8x56 - Ruger 10/22 .22LR - Remington 870 Express Tactical 12GA - 1943 Izhevsk Mosin-Nagant M91/30 7.62x54R