Authur P touched on some thing a lot of people don't relize. The nature of a three blade broadhead isn't to wind plane, four baldes will. The way to counter wind plane in a four blade is to make it look like an X when the arrow is on the string. If you make it look like this + it has wings and will fly your arrow. But the old view of four blades four fletch isn't true. I have been using 3 vane/ 4 blade for years and they shoot like darts. But I am not lining up vanes and braodhead either, just setting up the broadhead so it doesn't plane.
Gselkhunter