I have to second the Max Hunters. Having been shooting them for a couple months now, I am super impressed with their ability to stabilize arrows very quickly, which tremendously enhances my groups out to 70 yards.
I am seriously considering stepping up to a 5 degree helical, on the theory that an arrow that spins faster also stabilizes faster, enhancing accuracy at longer ranges.
With the height of the max hunters, the surface area gives excellent stabilization and super forgiving shot to shot consistency.