I have been getting into doing my own arrow work and bow work this year so I am learning alot. I always used to use feathers but got sick of them tearing apart and getting wet and looking busted up. Now i shoot vanes

What I would like to know is,

1. Is one faster thatn the other?
2. Is one less accurate than the other?
3. I bought arizona EZ-fletch, it applies the fletchings straight (or 1 degree) Is there a disadvantage to straight fletchings?
4. Is the weight difference between vanes and feathers anything to be concerned about?
5. What color fletchings fly the fastes?

(BTW, I shoot Carbons)

Thanks!