I bit the bullet today and bought the Gen4 G19. We went to the range after, only for me to discover that I left my ammo can at home. I only had 200 rounds in my range bag. My buddy brought his Gen1 G19 as a comparison. The trigger is excellent, it shoots point of aim and the recoil is not as bad (not that a 9mm is a wrist breaker). I shot my buddy's Gen1 and found that the Gen4 is much less snappy.
The ammo I had was Tula Brass case, Federal White Box, Blazer Aluminum Case, Ranger ammo and Speer Gold Dot hollow points. The Gold Dot has been my 9mm carry choice for awhile. It groups great in my G17, Browning Hi-Power and H&K P7M8. It did not disappoint in the G19, It shot point of aim with the tightest group of the day. I also got some Liberty Ammunition, 9mm +P 50 Gr. I was surprised it group as well as it did, my other friends Shield shot them like a shotgun. All of the ammo I shot grouped well, next time I will have a about 400 rounds to put through it.
I kept the standard backstrap on it and will experiment with the others another time. I won't be getting down the range for another week, so I will clean it up and get ready. I am very impressed with the G19, I have wanted one for years and I am glad I got the Gen4. I am debating whether to put an rmr on it or just go with Trijicon Night Sights, I have them on all my carry guns. Thanks for all the input