Close to 1000 rounds on my Gen 4 G19 and I couldn't be happier with it. Thought the G26 was all that until I got the 19. It has performed flawlessly no matter what. My last 3 USPSA classifiers bumped me to "C" in Limited and yes that was with the minor power factor. I'm going to start shooting Production and hope to reach "B" if not come in there. It's my EDC with Speer 124 +p Gold Dots, practice with NATO and shoot matches with the (used to be) inexpensive stuff.
Enjoy your new G19!
It's the stakes, not the odds.