Pro-form or Quick fuel carb?

I am replacing my current engine with a more modified 340 engine that will require a larger carb. I currently run a holley 650 Double pumper (list 4777) , but the new solid cam engine will need a 750 cfm carb.

I am considering a pro-form or quick fuel (Q series) carb instead of a 750 holley DP (list 4779).

what are your experiences with these products or similar (like Demon carb)?

Which one would you recommend?

Thanks,

bob