The newer vanes are able to be shorter with a generally lower profile because they are engineered to be "stiffer", and are constructed from "stiffer" materials. Theoretically they can steer or control the arrow more efficiently. They ate also extremely durable. I use mini blazers, 4 of them, they seem to have great control on the arrow and keep a lower profile, therefore getting around any clearance issues that may be encountered with 2" vanes. The downside to blazers of any length is that they are relatively noisy. I tried fobs 8 or so years ago, and while they do work well to stabilize broadheads, they are more useful in open country applications where incidental contact with things like a blade of grass (literally) will not occur. Trust me, they are not forgiving, they cost me one bull elk and that was enough!
Just what I have found.
Norm
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