I have struggled with the same question. I am not a fan of the #3 combat sight picture as Sig sets their pistols up for, typically using 6F/8R sights on their new guns. I was brought up on a #2 picture and prefer to keep it that way. I have changed all my P320 sights out to 8F/8R Sig x-Ray3s and am very happy with that setup. From now on, if I buy any more P320s (and likely I will- awesome gun) I will order with contrast sights, saving the extra dough over sig lites, knowing they will be changed out. Good luck!I've searched like crazy and never got a clear answer. Has anyone been able to come up with the right sight heights to get a #2 sight picture? P320 compact 9mm. Thanks!