Wow, that sounds like exactly my experience. I started with FireSights - love the green dot rear but don't like the red front so I swapped that out for a green tritium Meprolight. But like kingstrider said, I can't see the green at all at my range where I shoot most often. I'm thinking of getting a HiViz green. Wish I had just started there. Oh well, gotta learn what works best for you and the only way to do that is by trying a few things.I had a Meprolight front night sight on my 4" GP100 but wound up selling it. In low/no light it worked fine but at my dimly lit local indoor range it wasn't any better than the factory sight. If you want something that really stands out then fiber optic sights are the way to go. I just put Williams fiber optic sights on my 6" GP100 and liked them so much I put them on my 4.2" Redhawk too. If you just want the front sight then you might want to look at Hi Viz, they make one with interchangeable color inserts.