Light around the front sight makes it easier to pick out, but seems to make it a bit less precise. Trouble is, good sights are nice, but they don't really make the gun shoot any straighter. Mostly just let you shoot it better in lighting and at speeds that poorer sights don't work well at. If the sights aren't zeroed properly, getting them right will help no matter what.
Anyway, the Dawsons are nice. I like the fiber optic front sight personally, and just blacked out the stock rear with a Sharpie. Their Perfect Impact set is neat, they will work with you until you get the right POI.