There are a ton more people on this site much more qualified than I, to give advice on this, but my .02 is as follows.

HOLLEY. I dont like that Edelbrock carb. so similar to the Carter AFB series carbs. Everything is drop cast Aluminum and from the couple I have had experience with the adjusting screws dont do much at all, and the aluminum is very porus.

I say go with a holley designed carb as they are proven over the years. Parts are always readily available, and you can pick up some stuff for a good deal used.