All great guns. I have an XD-9 SC and prefer the feel to the G26. To me it is more controllable and feels better in the hand. The G19 feels about the same to me and has the advantage of a rail for a fullsize light. For CCH, my pick was obviously the XD sub compact, but you should shoot any gun you are seriously interested in before making up your mind.
(My short list when I bought the XD were, in order of what I thought would be my preference, G26, Sig P239, S&W 908 and the XD-9 Sub. I got surprised by the XD.)
For what it's worth, I like the disconnector, grip safety, takedown, sights and light rail on the sub compact, and the metal finish and common availability of the Glock.
There is also one Glock advantage no one thinks of, GSSF (Glock Sport Shooting Foundation) matches, the ideal way to start competitive shooting. You may outgrow it, but if you are a new shooter, it is the perfect introduction to competition. It is fun, low pressure and they give away guns.