I have shot both, I dont like the Axis full metal jackets, the aluminum makes them weaker! I know alot of you are probably thinking I am crazy, expecially since alot of you guys like the aluminum footers. I hate aluminum anything, it is weak, bends. And aluminum mixed in with the HIT system is bad juju.
HOWEVER, the axis and MFX classics are great shafts, I am just not partial to the full metal jackets, they can still bend when they hit something hard, and that is unexceptable. I LOVE the MFX classics. But like MRpenguin said they are kinda expensive, so I switched to Beeman ICS bowhunters. They are pretty good!