Yep that's true you got to set it up right. And funnily enough, the same thing applies to carby cars, you have to set it up right.
I would vote carby's in this instance because Gecko71 has already stated that he's proficient with carbies.
Carbies are more mechanically involved, jetting, linkages, balancing etc. The work you put into getting those things right is akin to spending the time carefully wiring up an EFI motor, so it really comes down to what the individual feels comfortable doing.