It really comes down to your eyesight and whether a few extra minutes of seeing the sights well in low light is important to you when hunting. It is also all about finding sights that give a decent compromise between fine aiming, but big enough to be visible in low light when hunting.
Many say a globe on the front is not very good in low light conditions. I have never tried one. I did struggle to see the factory front sight on my Renegade in low light, nail polish on the tip did help slightly though. I found chartreuse green and good old white to be the best colors for me.
I've shot archery for years and really like fiber optic sights. But archery sights come in much smaller sizes. I'd love to have a .029" F.O. front sight to try on my rifle.
I put a Williams ghost ring setup on my Renegade a few years ago. The ghost ring has two green F.O. dots on each side of it and I really like it, but the front sight has a red F.O. dot that is too big for my preference, somewhere around .060"-.080" diameter. I learned of a place called Ranger Point Precision that offers 3/8ths dovetail sights in red or green F.O., and a smaller .040" diameter. I've never found F.O. rifle sights that small anywhere else. I bought a green one and replaced my red Williams front sight with it, it is much better size wise and green shows up much better for me. It even improved my groups since it didn't cover up so much of the target. It did require quite a bit of filing before it fit on my Renegade.
In Idaho we can hunt from a half hour before sunup to a half hour after sundown, and F.O. sights easily allow me to be able to see them within that time frame and even beyond. I run into the problem, especially if in timber, of the animal being nothing more than a blob and I can't comfortably take the shot because of that rather than because I can't see my sights well.
I have tossed around the idea of just getting a flat topped 3/8th's dovetail sight and then drilling a hole through the length of the top. It would have to have some of the top filed down to the drilled portion so the F.O. rod would have more light gathering. I would drill it for a .029" fiber optic rod, or perhaps even a .019" rod, and then glue it in place. One of these days I'm going to try this.