I carry my Compact with a 14 round magazine in it (concealed carry). The back up magazine in my pocket and the two in my car/truck door pocket are 19 round Mecgars.
Yeah, they stick out a bit. Know what? If I've gone through the 15 in the pistol and need more, not only do I not care that the magazine sticks out, I bet I'm going to be glad as can be for the 5 extra rounds.
Those magazines, the 16 round with the base that makes it fit up against the frame/grip panels on the Compact not only look good, that little bit of extra grip surface down there on your little finger makes the pistol fit your hand even better.