The FNX-9 is a great gun. The backstraps are aggressive, but there is a softer option. The slide has a very substantial feel, allowing for the gun to be very well balanced. Safety / decocker is nice and easier to reach than Beretta in my opinion (think HK knockoff), the slide takedown is intuitive, and its a lefthanded friendly gun, not an issue for me.
The lowered bore axis is actually noticable when firing the gun, the gun more naturally points down and forward in succession for me than other guns in its class.
I was looking at both the FNX and PX4, and opted for the FN obviously, dont regret it. Im still going to pick up a Storm at some point, but for what its worth, the FNX is my nightstand weapon. That wont change anytime too soon.