use a carnivore if looking for foc weight, day six is reputed to be the toughest carbon, the easton fmj t64 is supposed to be the bee's knees and the good old axis still astounds !
i am shooting the carnivore and the axis and the black eagle vintage - they all group well when i do my job. seriously though get a light carbon shaft with the systems available from tuffhead, valkyrie or tophat. i have the tuffhead on order from Jason. it is supposed to arrive sometime soon.
there is not sound change from 130 odd less arrow weight that my ears could discern and a 10 inch change in poi.
another shafts i have never busted is the arrowdynamic tapered heavies- the nocks are a different story though