I have used both the QAD and RipCord..I like the thumb lever on the QAD for flipping the rest up, the Rip Cord does not have that. But I like the Rip Cord for the solid build using good parts, it feels more solid compared to the QAD..I did have the QAD give me trouble on a late season hunt, the rest froze and would not drop away..never seen that with the Rip Cord.
Long story short, I prefer the Rip Cord over the QAD