I fully agree with Cletus regarding the Hostage Rest. I am about 200 shots with it and it has worn bristles. I'm leaning toward the Trophy Taker Drop-away line.. I've read good things, my brother just bought one but hasn't used it yet.
As for the Whisker Biscuit.. Here is a link for slow motion video of an arrow passing through the WB. Make your own assessments, It has been a part of a lot of kills.
http://www.youtube.com/watch?v=fwTizMtvKwI