For what it's worth:
1) I've found that Double Taps 9mm 147 grain TMJ round feeds well through a Glock 19.
2) Barring that, my plan is to use a .357 180 grain wide flat nose round.
If I were in your shoes, I'd go the .357 route, as it doesn't sound like you've enough time to establish reliability in any of the autoloaders.