I would run the .474 between the two.It has better idle and low rpm manners.It pulls to the same rpm as the .484 and the torque/power willcome on sooner.They both are a little soft on the low end but that'sok with street tires and you can clutch it at whatever rpm you want.
I ran one in a 440 with 3.55 gears and stock everything else except headers and loved it.