You know, I always thought a loupe might help, but I had never invested in one before. When I came across the XIT for less than $30, I had to try it. I was genuinely surprised by how useful it was. I won't ever go shooting in the sun without it now (which means it will get a lot of use). It does one thing, and it does so quite perfectly - and it's one of the cheapest things I carry with me.