I like my XD, though the grip angle on Glocks doesn't bother me. The grip safety engages automatically just like a 1911 grip safety, no extra motion it's just "on" when you release the gun, "off" when you take a firing grip. How useful that is is a matter of some debate, bt I like it.
The XD .45 ACP is really impressively small for a 14 round .45, much more manageable than a Glock 21 for instance.
My has had a problem with magazines. Recoil drives the back of the top round into the upper lip of the magazine, eventually causing the lip to bend outward and allowing rounds to sit improperly at the top of the mag, causing feed problems. New mags clear up the problem, but eventually the little outward bulge reappears. Thi sdoesn't hapen to everybody, maybe I just let the gun fly back a little too much when it recoils. SA has been just terrific about warranty work and swapping out the damaged magazines, no fuss no muss and they reimbursed me for shipping. The Glock magazines are metal wrapped in polymer, and they are sturdier, but bulkier and it's a B***h to load the last cou[ple rounds into them.
As for grip angle, the XD is a bit more like a 1911 than a glock, which a lot of 1911 and Sig fans like. It works for me, but so does the Glock's Luger-like grip angle, I don't see why people dislike it. It's similar to the grip angle of a Ruger Mark 2 or Mark 3 .22 lr, and nobody complains about the swept back grip angle on those.
The XD has a somewhat better stock trigger than the Glock. I don't know if Glocks really kBoom the way people say they do, but the fully ramped and supported chamber makes me feel better.
If I were to buy a Glock to fill a similar niche to my XD, it would be the Glock 30, not the full size Glock, and SA now has a compact XD .45 that can take sort 10 round mags or 13 rounders.