Okay, I'm stuck. I own a 22 and a 23. I'm considering a 27 since I could use all the bigger magazines for it. I also have 9mm conversion barrels for them. I see the possible benefit of getting the 27 but I'm thinking about going with a bigger caliber. May the glock 36 or maybe even a 39. I'm iffy on the 39 though since it's hard to find .45 gap ammo. What are your thoughts?