I am currently looking into purchasing my first firearm for concealed carry. I am just looking for some honest & educated opinions on the above listed firearms. Wondering which one the NES community thinks is best. I understand two are 9mm and one is a .45 ACP, but they are all pretty close in size and concealability. Would love to hear from owners of said guns and what everyone thinks about buying a brand new Ruger or going with a used but proven Glock design. Thanks in advance for your help.