You cant beat the tuning of an edelbrock or the dependability, holleys are rebuilt daily and need constant tuning, i didnt do any tuning on my carb since i had it, i tried 2 different holleys but just didnt get anywhere, Almost bought a demon til my buddy bought one and had a terrible experience with it on a brand new motor. The price of holleys is crazy, the dual feed lines, the gasket kits, the jet kits. I could rebuild a motor by the time i got done. Sure i might drop a tenth or somethin with a holley but ill stick to edelbrock til i get itchy to mess with a holley again. Stepside did you try both of these carbs? if so, any bad experiences with either???