There are many reliable 9mm firearms available. As many have stated: you need to decide what works for you. I first bought an M&P Full Size 9mm, great gun, no faults in 4 years of shooting, but it is just too bulky for my comfort for everyday, anywhere carry. So I bought an M&P 9mm Compact, great gun, no faults in 3 1/2 years, still a little bulky for me. So I bought a Kahr K9, steel, only holds 7 or 8 rounds (magazine size), no faults in 3 years, but I thought it was still a little large. I was going to buy a Kahr MK9 but opted to go with the MK40. I figured with the limited amount of rounds (now 5,6 or 7 magazine size) I wanted a little more power. This is my routine carry gun, along with two spare mags. I also put a Hogue handall Jr around the grip to provide recoil absorption and increase the tack of the grip in your hand. It is a very accurate gun and I find it quite comfortable to carry, even though for it's size it is relatively heavy. It is one of the smallest metal frame 9mm & 40 S&W caliber weapons out there. In heavier coat weather I will carry the M&P 9mm Compact. I've handled many sizes of Glocks (multiple times) and have not found one that fits my hand as comfortably as any of the weapons I mentioned. They have a larger grip, even the Gen 4 versions and I cannot reach the magazine eject button with my thumb, but on the weapons I bought, it is not a problem. So, find find what fits good in your hand, then find what fits your body and clothing style to be concealed well and then shoot them to see if you like them and if they are accurate for you. It's not something to rush into, they are not really cheap if you buy the top brands: S&W, Ruger, FN, Glock, Springfield, Colt, Kahr, CZ, Beretta.