I finally got to the range with both of my G17s today and shot them side by side. I shot some Remington UMC and some Federal 115gr FMJ loads. I can confidently say that the Gen4 gun shoots a little softer than the Gen2 gun. The recoil not only seems less, but it seems like there's less snap to it also. There's definitely a perceptible difference. I'm not convinced that it's a meaningful difference though. I hesitate to try and assign a percentage value to the difference, but my guess would be that the Gen4 feels like about 80% of what the Gen2 does. I've still not had any problems with my Gen4. I've now tried three different brands of ammo and experienced no failures of any sort.