Help me pick a new carb

It's all built into the carb,, it's just an alternate way of opening the secondarys...

LOL! Ok, see just wanted to prove I dont know crap about carbs!

Ok, I will check out the vacuum secondary carbs.

I see a lot of the carbs are based off of the holley carbs, so should I just stick with the tried and true Holley or are there other brands that are just as good?