I just switched from the Beamans to the Carbon Tech XPs at Len's suggestion. He glued in ACC nock inserts for me. I''m really happy with them. He had cut both ends to elimanate flaws at the ends and they're the straightest things I've ever shot. They spin like a top, everyone of them. They're tougher than nails too. The XPs with the yellow print are the straightest. mine with 125 grain heads and 4 fletch mini quick spins cut to 28 inches weigh in at 467 grains. I really like them. Straightness of .0015.