Help me pick a new carb

Ok, I've looked at a handful of carbs all based off of the 4150/4160 carbs

Holley has some factory refurbished ones on ebay. The street avenger 670 and a traditional 650. Then I've also looked at new Holley's, Proform, Quick Fuel, and I believe a summit brand.

Are these all pretty equal carbs? Can anyone give me pros or cons on them?