RE: Pros & Cons of Diamond vanes & FF vanes
Personally, I have used Easton Diamond Vanes until they did away with their 4.75" vane. Since then I have went to Arizona and I believe that they are identical to Eason, without the hefty price. I have not tried the Flex Flethch, but a lot of people swear by them. I have always been happy with the previously mentioned vanes though.
P.S. This is only for my compound bow.