Oh the old whisker biscuit debate-will it slow you down? Yes---will it have vane contact? Yes---Can it be a bit tough on CERTAIN vanes? Yes. But it will only slow you down a few fps (proven time and time again) and there are a lot of vanes such as Blazers that can take the contact fine. Heck what do a couple of vanes cost anyways. The pro's in my mind (for hunting) far outweigh the cons such as easy to setup, foolproof after setup, no tinkering after setup, extremely reiliable at critical times during hunting, affordable and very very widely used for these reasons. The absolute best hunters I know with many many years of experience ALL use the whisker biscuit. I tried very hard to find reasons not to like them and failed.