I've always liked the QAD ultra-rest. You can cock it up into place and its a full containment rest, no possible way for the arrow to fall out. But lets say you draw back on a deer and theres not a clean shot and you have to let down, the rest stays up where another dropaway would fall and cause the arrow to hit the shelf. But when you shoot it falls out of the way like a normal dropaway. I had one on my equalizer last year and never had any issues with it at all.

http://www.qadinc.com/c-5-.aspx