Up until the latest crossbow, g5 montecs. Now chinadermics. The montec does not group well past 40 yards in the centerpoint 415 I have now. The chinadermics all stack into a couple inches at 100 yards and poi is less than an inch from poa. I would have preferred a fixed blade but they don't fly well for me. Have not shot an animal with the mechs yet so we'll see what happens.