I have a couple XD's. I really like the full size 45. My wife really likes the 40 xd subcompact.

I like my glocks but my personal carry ones are all older and well proven to be reliable. My duty one is just fine. I am a range instructor for my agency so I get to see all the problems on the range. But when you field 500+ pistols you are bound to see some problems. The gen 4's just seem to have more than I have seen with the past models. Recoil springs and trigger connector bars being the latest 2 tweeks we have done.

If you can get your hands on a gen 4 and it feels like it has a decent trigger. Not the New York trigger, you should be fine. I just have a thing about any weapon that I field has to be 100% reliable with the ammo I use. I won't field one unless it has 500 problem free rounds.

Not to scare you way from glocks. I have had exactly one problem in all the years with any one I have carried and that has been through 10's of thousands of rounds fired. It was a bad magazine. They are a good pistol.