I'd have to say for a daily driver run a 600cfm edelbrock with an electric choke. Set it up you never have to mess with it. No blown power valves and good fuel economy. Holley's never seem to get the mileage that you can get with an edelbrock. Edelbrock has small primaries like a q-jet that is nice for the milleage. For a hardcore racer holley would probably be better.