I have the XD9 because of the grip. Glock felt all wrong for me. I have XL hands and have no trouble with the grip safety.
I agree the Walther PPQ has a nice trigger but I can get used to just about any trigger given a little dry firing. I've handled and dry fired the PPQ and a Ruger SR9 and both triggers are very close in feel but I have not fired real ammo in either. Both have much better triggers than Glock or XD in my opinion.