Oh look he's calling the other old guy
Time to head off to bed. The adults need to have a conversation here.
Ok, I'll start off by saying the XD lineup does not offer a .45 ACP sub-compact. Your only choices for the XD sub-compact lineup will be the 9x19mm or the .40 S&W chamberings. You can still pick up a compact .45 ACP XD with a 4 inch barrel. You may want to look into that, if that seems like something you would be interested in.
Now onto the Glock issue. Here's a few of my thoughts on the overpriced Glock brand (perfection my a**....lol).
1. Tennifer finish is nothing special. In the USA, one of the names it is called is Melonite (which is what the XD lineup uses). Tennifer and Melonite are the same thing, just different names. The folks in Europe that developed the Tennifer finish didn't want other companies to use the name (which is understandable from a marketing standpoint). Don't take my word for it, though. I encourage you to perform the research yourself if you do not believe me.
2. The plastic guide rod. The plastic guide rod does, in fact, hold up to normal use, but there is one big issue I have with it. Plainly put, I do not want to spend 550 dollars or more on a pistol that has the same plastic guide rod that is offered on a 300 dollar S&W Sigma pistol. The XD lienup has steel, not plastic, guide rods. Plastic versus steel? It's your choice on that.
3. The infamous Glock torture tests. The Glock company is known to trudge out the fact that their pistols can withstand all sorts of weird torture tests and still fire. That's great, but the Glock isn't the only pistol to do it. XD did the same torture tests, but put even more rounds through their pistols.
4. The grip angle. The reasoning behind this grip angle on the Glock is beacuse supposedly when you use the pistol in a "true" aggressive combat stance, this grip angle will allow natural point of aim. That is utter BS. I always wonder what the Glock company considers a combat stance? What about one-handed shooting? Around barricades? Sitting? Shooting while moving? etc, etc. Some people love the grip angle, but others hate them. Most operators I have spoke with in my military travels cannot stand the Glock. They prefer another grip angle which is what the XD offers. This grip angle was pioneered by:
The 1911 pistol! I would recommend that you try out one of the 1911 compacts offered on today's market (like the picture which is a Colt Defender .45 ACP). You WILL NOT
find another design that has proven itself in longevity, and reliability. I encourage you to show me another semi-automatic design that is still being used by military, LEO, federal, and civilian sheep dog people after 98 years.
In the end, it's up to you what you choose. The firearm has to fit YOU. Take your time with your decision, and go with your gut feeling. Some firearms will feel "right" to you, others will not.
Good luck, and regardless of your choice, you will be getting a firearm that works just fine.
Here's my basic review of my personal XD9 on youtube: