Another plus to the delta is that the very tip of the delta make a great prescison aiming point and the body makes a really obvious one.
I have sighted my tip in at 13 yards which also means that at 45 yard the tip is zeroed for POA/POI. This gives me a BSZ of like 50 yards with a ±1/2" variance between 5 and 50 yards. I’m -3" at 75 or roughly the center of the delta.
Going further I can use the BOTTOM of the delta as an aimpoint to get out to 100 yards.
A smaller DOT will give more prescison than a larger one, but the delta also gives an even better precision with multiple aim points.
Yeah, I never got the “larger dot is faster to pick up” thing, since it’s a brilliant red laser dot pointing at your eye… it’s gonna be easy to see. for me it’s always been about the correct brightness level to get a decent non sparkly dot.