Looking For A New Arrow Rest - Ripcord, Qad, Zero Effect

[jeremy_hoffman]

With so many great rests on the market its hard for me to decide which one to go with. Im looking at three right now.

Ripcord - Full containment, has good reviews, always drops on any let down
Qad - Most good reviews when setup, possible fletching clearence issues with blazer vanes. Stays up on slow letdown!
Zero Effect or X-celerator from Muzzy - Long history, wicked setup depending on choice.

They are all nice but I cannot really decide, I wanna buy the Qad for the fact you can lock it up position. The ripcord seems nice but has an internal pull string. The zero effect seems to have the most reliable parts.

HELP - Good and bad, please!