I'll tell you two things in comparison to the Glock, the XD lacks. Now i own an XD-40 and it is by a huge longshot the best auto pistol i've ever owned or used to me. I went with it b/c it fit my hand better than the Glock 22s I looked at. However Glock's two advantages are the finish on the slide, my XDs finish has wore noticably from carry, which in no way effects function. the other is the Glock has better mag capacity, vs the 12 shot clip of my XD. Being a wheelgun man though I dont notice alot but if you want to get picky.