I Picked up a gen 4 g19 for edc a few months back. I like the way the gun felt and performed but the materials used were different than my gen 4 g23 and gen 3 guns. I wasn't used to the frame rails peeling after 50 rounds, and wasn't used to the slide coating being so susceptible to damage. I noticed the slide started to get an orange hue a few days ago and I was just ready to let the gun go & did.
The quality of this few year old Gen 3 I picked up is outstanding, much better than anything I've seen brand new off the shelf lately, I wish I could find a gen 4 built like this, I really do like the feel of the gen 4's