Guess me and Quilly will have to disagree
I put some William' s Fire Sights on my Mossy and love them! They are great. I like the all metal construction and I think they have a great sight picture during both overcast and sunny days unlike some fiber optics I have seen. I also like the mounting system and the windage and elevation adjustments. Best part was I got them for $25.99 at
http://www.natchezss.com