RE: Whisker Biscuit or Drop away?
I always hated the biscuit until I tried one. I have one bow with a biscuit and one with a dropaway. I like them both.
The dropaway is slightly more forgiving and if you have bad form. It does have moving parts that have failed and needed replaced. Set up was tricky at first. For 3d I'd go with a dropaway.
The biscuit has no moving parts. It does not eat up fletchingif you set it up correctly. It is quiet on the draw and on the release. The key with the biscuit is to set it up properly, like any rest. Also, get the biggest hole possible. If it's not set up right you will be refletching every week.
I shot both all summer, and I've decided to put a biscuit on both bows for hunting season. I shoot the same size groups with the dropaway and the biscuit. So the biscuit wins because it is a simpler design with no moving parts to worry about.
I think my setup this fall will be whisker biscuit, blazers with 2 degree offset, and slick tricks.