I just won a smith and wesson sdve handgun at a gun raffle. I have the choice between the 9mm and 40. I have a mini uzi 9mm, ruger p95 9mm, and a taurus 22 pistol already from my father in law. I am new to handguns and dont even shoot them yet. I have them in a safe. My question is what caliber should i buy? 9mm to go with my others or a 40 just to be different? any info about this gun?