These happen to be two of my favorite balls. The Havoc is assymetrical "lite", meaning that it will give you a little more flip in the back than the Freak-a-zoid (but that is not to say that the ball will jump off the dry). I loved my Havoc with surface because it gave me an even read on most lane conditions and hit strongly.
My Freak-a-zoid is more even than the Havoc and it is definitely my "go to" ball when the going gets tough. You can also have success with surface but I think it works best out of the box, clean and sheen, I believe. The smoothness of this ball allows me to use the track area as a little bumper without having to worry about splitting or getting into trouble. It is the ball that I start practice with and I often end up using it all night.
Depending on how you bowl and where you bowl any of these two balls would be great pieces to have but to have both is even better:
Dull Havoc + Shiny FAZ = Damn good complements for me.
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Chappy Girl
Freaky About the Freak-A-Zoid
Boricua hasta en la luna...
World Class Pro Shops Staff