It's impossible to beat a Bowen Target Rear Sight for precision adjustability, durability and sight picture. I'm not a fan of his Rough Country sights at all, and won't have one on any of my guns.
Generally, I prefer a black / blued custom slightly undercut front sight. Bowen, Clements, or several others could supply you with what you need.
For something other than a black front sight, I recommend a green fiber optic front sight from Hi-Viz. Part Number RH2006-G. The top of these is square, which helps with sight alignment, but the green really draws your eye to the front sight. I find the green far superior to a brass bead in the woods.
These front and rear aftermarket sights are pricey, but worth every dime, if you demand a superb sight picture.