I' have the whisker biscuit and will be going to the QAD drop away rest.
The WB is tough on fletches, in fact, the pro shop asks if you use a WB when refletching arrows so they can add an additional drop of glue on the leading edge.
I like it and all, just like tinkering with things. And among some other changes this off-season, switching rests is on my list.
I also just think there has to be some miniscule effect on ovewrall performance when all of the fletches are "interfering" with the shot, every time.

Go with the drop away.