Although there are several milder pearls that claim some aspects of consistency and predictablity, even there is some uneveness down lane in the oil and the dry areas, most often a polished mild solid will give much more of these desired characteristics than a pearl will.

Balls, like the Ebonite Red/Black Bash, Lane#1 Chainsaw, and the Visionary Blue/Green Centaur, when polished, will give you more of this sense of control along with length and consistency than most pearls.

The Roto-Grip Mars, being a solid/pearl combo, might have some of these traits.
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"None are so blind as those who will not see."