I think the Rule would be better for above the Freakout, for the obvious. It is a strong ball, but still gets a decent amount of length.
For below the Freakout....I am not sure I would go with the Freakazoid. The Freakazoid still picks up fairly early, and I play very close with it as I do the Freakout. My suggestion for below would be the Slash. The Slash can be a strong ball if drilled to do so......SO make sure you drill it weaker than the Freakout. Throw a coat of Delayed Reaction on the Slash and you have a good 3 ball arsenal there.
-EX-
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