Jpr, you are correct, I think most all lane 1 balls and brunswick balls are a version of either Pk 17,18 or 19 with some changes in formulation or adding different particle loads or none at all, They could make suttle changes to the resin and call it a new coverstock, In theroy it is.
Just like the PBA "Elite" line of balls, Brunswick is mfg, These balls are not going to be much different then what they are doing now in there line and in lane 1's Just some diferent core and coverstock combos, Retro
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Tripping 10's, Its all about entry angle into the hole!!
Cherry C/2 (2)
Tsunami
Super Carbide
Emerald
Cobalt
Cranberry
EPXT1
Rhino PTE
Guranteed
Ultimate Inferno
Goliath
Zone Classic
Target Zone