In my opinion, it all depends on the situation. I usually use non uv and uv. I think uv is just an added tool in the anglers' arsenal and should not be the only type of material used. Using only uv or non uv just because you think one always works better than the other is like using only one color or one size of a fly instead of different colors or different sizes, but hey, if that's how you want to fish, that's your prerogative, and I have no right to tell you how to fish. Also keep in mind that uv products were almost unheard of a year or so ago, but I was still catching fish like crazy a year or so ago.