Well, what XD are you looking for their service model, tactical, xd sub compact? Furthermore, you realize that you are comparing a 9x19mm Glock 19 with two other pistol series that are chambered in not only 9x19mm, but also.357SIG and .40 SW so there will be some difficulty when it comes to certain comparisons.
Also are we talking about a G19 or a G19c? Knowing exactly which pistol you're interested in will help when it comes to compariing things like which is more concealable. As for accuracy that is a highly subjective thing, but there are some objective facts that favor the Steyr over the G19 and XD series. Durability is subjective as well, are we talking about rounds fired until failure or how long you're pistol will stand-up with proper maintenance?
Also are we talking about a G19 or a G19c? Knowing exactly which pistol you're interested in will help when it comes to compariing things like which is more concealable. As for accuracy that is a highly subjective thing, but there are some objective facts that favor the Steyr over the G19 and XD series. Durability is subjective as well, are we talking about rounds fired until failure or how long you're pistol will stand-up with proper maintenance?