Asking people what 15 round 9mm is best is like asking what their favorite color is. 15 round 9mm's have literally the best options in handguns. I personally think the best 9mm pistol is the Cz p01 which has a 14 round mag, but the +1 will give you 15 rounds. The omega version offers the ability to switch between safety/decocker. The problem with that pistol is actually physically finding one. Every other option mentioned already is also great. The Arex zero 1 compact is supposed to be imported early 2017 and that gun is building up a lot of steam in the gun community with its outstanding performance.