I generally choose to carry either a G26 and/or one of my J-frames. The J-frames, especially one of my Airweights, are simply more easily carried in more of the normal situations involving my daily activities.
Maybe it's just because I spent so many years carrying plainclothes and off-duty weapons, but I enjoy not having to lug around a large (or even a compact) weapon all the time. The J-frame works well for me in that regard. I do spend the necessary time shooting them for practice, though, and I carried a service revolver for a number of years, so I have some revolver shooting & loading skills I've developed and maintained over the years. I wouldn't carry a J-frame if I couldn't shoot one well.
The G26 is also a frequent choice for those occasions when I feel it prudent to carry a larger off-duty (and now retirement) weapon. The 10-rd magazines allow for less reloading than my 5-shot J's, and the trigger is better in some important ways. It's an easier gun to shoot well in many respects.
I suppose I could take my G27 along instead of one of my G26's. For the most part I simply like the admittedly slight advantage my G26's offer me in the way of controllability & recoil management. I also shoot the baby Glock .40 pretty well, though. It's just not as pleasant over the course of extended range sessions as shooting my G26, or other smallish 9's, or my M&P 40c, 4013TSW, etc.
I've actually done slightly more shooting with the G27 than my original G26 (more than 11K rounds through each). Not only have I found the G27's recoil characteristics seem to require more practice and work, but I've noticed that the more and better I shoot with my G27, the better I tend to do with my lesser recoiling G26. Sort of a win-win in that respect.
I have some other excellent compact & subcompact 9's, .40's & .45's from which I could chose, but they'd be more difficult and expensive to replace should one of them ever be taken into evidence/property for an extended period, and I don't have nearly as much "invested" in the subcompact Glock 9's & .40, especially from the "pride-of-ownership" perspective.
While I'm not particularly bothered by the accumulation of normal wear & tear on designated defensive carry weapons, having seen my fair share occur over the years on both issued and personally-owned guns, I'm especially not bothered by developing such wear on the inexpensive Glocks. They can be easily replaced, and at a discounted price from a Glock LE dealer.