This thread is still around!! LOL
anyway, I have run Predators, Holleys and Edelbrocks. If you have the time, money and tuning experience I would say a fully preped holley will be the winner. If your the average joe carb tuner the Predator would win hands down! The throttle response is INSTANT.
They are very simple in all aspects, that is also their downfall. Tuning is fairly limited in compassion to other carbs. One other thing they do well is 930CFM !!!! For the price of a used one and a rebuild kit you can have a giant Variable carb. Don't like it? Re-sell it on Ebay and your not out anything.