Surprised it's so corroded that they couldn't at least get it running better. Did they dip it first, or were they only putting new parts in it?
Shame to waste a good carb, but if it's indeed that far gone, I guess you do have to break down and get a new one.
What are your intentions for the Bronco? Daily Driver? Off-road only? Little of both?
Where do you live? High altitude or low? That kind of stuff.
I like the Edelbrocks for their ease of tweaking, but they tend to need more help than most in the off-road angles.
For the most aftermarket tweak parts, Holley's have it. You can also get one of the smaller carbs from Holley now. The Truck Avenger 470 seems a good choice for a stock to mild 302.
Seems the happiest carb owners for both are the Quadrajet owners, but you have to do more work to make one work on a Bronco.
See? Simple decision, huh?
Maybe a Holley TA 470 as a good middle-of-the-road choice?
Just keep the size between 450 and 600 though. A 650 would work, but is more oversizezd than you need and would lose some theoretical efficiency at that point. The Edelbrock (Carter type) is more forgiving of oversizing, and the Quadrajets don't fall into that category. They use other design features to work on smaller engines.
Maybe some of the TA owners will chime in.
Paul