definitely go with the bitzenberger. you can get the addition clamp for a small extra charge and that way you will have both straight and helical clamps. as far as fletchings go, the longer the vane the faster it will stabilize the arrow. the more helical the faster it will stabilize your arrow. the trade off is the faster it stabilizes your arrow means the faster it slows down. I like a 2.5" feather fletched with a helical for hunting.