1 more vote for the Demon. I faxed BG the build sheet from Southern, they gave me the carb model #, picked it up from Garry Grimes and an hour later the car ran like I always figured it was supposed to.
Holley is generally well respected, for what its made for, and can be made to run well with some attention....but it can't compare to a custom carb, especially not right out of the box... and I don't see many engines among the posts here that aren't highly modified....being driven around in light cars... by heavy feet