As others have stated, you have to shoot the three guns in mind and choose what's most appealing in the hand and comfortable. I agree with points on hammer fired pistols. I prefer it for greater safety while carrying appendix. The LEM trigger is great and should be considered since you're an unbiased beginner. Don't get caught up in the caliber debate. Shot placement is most important especially when just starting out - go with 9mm. Concealed carry is an evolution. Be prepared to change holsters, carry location and even pistols multiple times until you find what works for you. But train train train. Don't just buy a gun, stick it in your pants and call it good.
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