The PX4 is another great option, a little more money but it is a nicer pistol than the P95 and SD9.
I've been wanting to buy a PX4 for a while (when the money becomes available). It is a solid pistol and the DA/SA trigger is close to the M9.
If you still want to stick with either the P95 and SD9, why not give the SD9 a try? You already know what the P95 is like; its always good to try something different.