I picked up a set of Cartels at the beginning of the season; I have to say they have all the adjustment I could ask for, they fit snug, and the bindings are smooooth. Actually, a few friends tried them out and jumped on the wagon. Not saying that they're better than Prophecy bindings, but I don't imagine you can go wrong either way.
Aventadoor: I looked at the Malavita and Prophecy binding and couldn't really see a difference in the straps to be honest (other than aesthetics) They had all the same adjustments. The only differences I could find were the back plate is a full basket design, and the foot plate had a more cushioned sole. They say it's stiffer overall, but without having actually used it I couldn't give a real world write up. As for weight I didn't notice any substantial difference. For the price I think the Cartels are decent, although I do prefer the basket design for the backplate.
What other brands in the same range would you compare? Ive talked to a few people who were using Rome and Union that said they were comparable.