Living in Bowling Green makes me partial to Holley and Quick Fuel. Quick Fuel owners were Holley Engineers, they only made them better. I have a QF 750 DP on a 347 and its runs better than any Holley or Barry Grant. They use their own design billet bases, billet metering blocks with vastly improved passages, Proform bodies on some, own design floats, fuel bowl look like Holley center pivots but the word Holley does not appear anywhere. Yes, I'm a satisfied customer.
When I needed a carb, I stopped by their shop and they custom built one
and tested on dyno motor. I bolted it on and have not made a single adjustment in 6 months.