I have used a whisker bisquit for the past 2 years. Being that it is full containment, the arrow doesn't move, is quiet, and when properly tuned gets awesome groups. I never have to worry about a spring getting stuck, a cord messing up, or the arrow falling off, etc. The fewer moving parts = less room for malfunction!!!
I have recently tried a Bowtech/Diamond Hostage rest. It is basically a whisker bisquit without the fletching contact. So far so good. It is much quieter and a bit faster than the WB.