Edelbrock Performer Carb question

A little update, I rebuilt the performer I had on my 360, Which was running for crap. Car would die as soon as I put it in Reverse. Ive been trying to dial it in on full manifold vacuum. Just on a whim I switched to ported vac and got an amazing improvement. If I do get a new carb it will be the AVS2 as I have been reading good things about them.