Some lessons I've learned:
1. My eyes like clean simple sights. Plain lack sights are quicker for me to aim in most conditions. Night sights are too busy and cluttered. My eye has trouble decideing what to aim with.
The dots? The blade edges? The Tritium vial?
2. When I use my pistol for night training with a Sure fire E2D or G2 light, busy complex sights are hard to use when the glare of the light hits them. Shiny smooth Tritium vials can refect light back.
3. If it's so dark I need my nightsights, I'll probally be point shooting anyways.
But i'm in a suburb tonight, it really deosn't get dark.
4. Contrast is what works best for aiming. Pure black sights are easy to contrast to things quickly. A front sight that is super thin helps as well. Letting what little light between the sights and improving contrast.
A fat front sight turns my sight picture into a black blob. I never use a front sight fatter than .110, .090 is best IME.
5. Point shooting. Forget the sights, my backdrop is clean, and there's a gun pointed at me. Odd's are point shooting is one of the most important skils
6. A fibreoptic front sight works as well as plain black sights, you never notice the FO rod in low light. But outside it glows and can speed up rapid fire shots. So I usually use FO front and plain rear.
7. My DW V with Heinie Ledge works well at night, and is the simplest night sights I've used. In low light the rear sight looks like a plain black sight.
So in low light this setup has a bright glowing front, plain rear. A decent compromise. Only in pure darkness deos the rear glow. (you can't even see it in the pic, just like a proper front sight focus)
It suffers a little during the day time. Timers in competition show it to be a hair slower, at 15+ yards, than black sights in low light most of the time.
8. This next setup rules the day, deos well in low light due to it's simplicity, and the thin front blade. In pure dark I expect to have a flashlight. 80% of the time this setup is my choice for CCW. In most practical senerios, these look just like plain black sights.
My other 1911's have this setup with even thinner .090 front sights. Better for long, long range shots. 25-50yards.
9. Night sights are allways crooked. The vial is allways off center compared to the edge of the sight, or the white ring isn't concentric around the entire sight. You have three things, all poorly crafted fighting for your attention. Plain sights only have one thing for you to focus on.
I had a set of XS bigdot sights that the line vial in the rear didn't lineup with the V notch. So my eyes were allways trying to decide which to aim with. One day at the range I took my time to try each. And using the V-notch had a significant change in POA/POI compared to the vial.
10. Bottom line, I have a few sets of Heinie Ledge night sights. But those are for a specific senerio. (Night, no flashlight being carried, in the sticks) For most uses FO front, plain rear work best for me.