Well if I can get this one to cooperate (and I'm sure its just something simple I'm missing) I'd think you can't go wrong for their price! This one only cost me $259 Cdn in the box with instructions, gaskets, and all the other goodies.
Although unlikely, I'm going back to wondering if its possible my stock fuel pump is putting out too much pressure. Is it possible the pump I'm using from my old 283 that fed a small 2bbl is somehow putting out too much for the Edelbrock? Edelbrock is very clear that their 600cfm likes no more than 6.5psi. I don't have a fuel pressure gauge or a regulator. I might have to go buy one...