Thanks for the quick reply and helpful answer JV. I think Todd draws a distinction between the gen 4 and gen 3.
From Week 30 of Glock gen4 Endurance Test
I played around a bit with the New York trigger return spring again this week. While it was manageable for most things and made my press-outs feel better, it was noticeably slower and made critical shots — especially one-handed — more difficult. It might be something I could just adapt to over time, but my current setup of a dot connector and standard trigger return spring still gives me a trigger pull a bit over five pounds. I prefer the heavier takeup of the NY spring, but wish it could be mated to a lighter overall break in the ~6# neighborhood. The gen3 guns with a minus connector and NY1 spring are perfect. Lacking that, I’ll stick with the stock setup on my gen4 guns.
http://pistol-training.com/archives/5482