RE: Bow tuning
Epic 400's, Vapor 5000 and ICSH 340's. NONE of those arrows match in weight or stiffness. They will never shoot to the same point of aim because they cannot all operate out of the same bow at the same settings.
Figure out which ones shoot best for you. Tune them in. Sight them in. Buy more of that particular brand and size at the same length. Get rid of the others.