I pretty much agree with Rangeball and 98Redline It doesn' t really matter much.
BUT...if given the choice, I' d go with the 3-D selects...because the vanes ARE shooting JUST as good as the feathers, you might as well have the vanes JUST incase it DOES rain...that and it you bump your quiver full of feathers, they can make a bit of noise.
these are SMALL reasons...but all else being equal (weight is too close to be a concern for speed and/or penetration) I had to pick a tie breaker.