Which Carb Gives a Balance of Power & MPG?

I run an Edelbrock (Carter AFB actually) on my Duster because the metering rod system and demand-type secondaries are more versatile than Holleys. Not only is it less sensitive to incorrect tuning but changes the A/F ratio based on engine load/vacuum. You can change the jet AND metering rod sizes so that under WOT the A/F will be ideal for max power (~12.5:1) and under part-throttle cruising the A/F will be leaner for max fuel economy (~15.5:1). They are also less sensitive to changing atmospheric conditions such as altitude, humidity, and temperature. I'll admit I haven't tried a Holley yet but I just wanted to stick up for the Edelbrocks because it seems everybody knocks on them for no apparent reason...

Oh and the ThermoQuad is arguably the most advanced carburetor ever put on cars. FAR more sophisticated than any Holley and in the right hands can give great gas mileage and power, but it is difficult to get tuned right because of how complicated it is. And that "untrustworthy" plastic (actually phenolic) center section keeps the fuel about 25*F cooler than an all-aluminum carb which is GREAT for the crappy oxygenated and ethanol-infused pump gas we have nowadays. The trick is finding one with the least amount of smog add-ons (typically early-mid '70s) that originally came from an engine the same size as yours.