Shield 9mm = 8 rounds

XDS 45 acp = 6 rounds

Two extra rounds in about the same size weapon is enough to convince me to go Shield 9mm.

I have also read complaints with quick deployment if you don't have a good grip on the XDs you will not disengage the grip safety. (I find it real easy with a pocket size weapon when drawing in a hurry from the pocket to not grip the weapon properly. I have never missed sweeping the safety on my Shield even if I don't have a good grip.)

Russ