Ok, here is a shot difference between the OB-1 and Predator. When I shoot with a predator and use 3/4 tip of English the object ball does this:
http://CueTable.com/P/?@2APkK4PICK2UPkK2UcAp2Uchr4kICK2kOdw2kOeC@
When I shoot the same shot with the OB-1 I get a ton of throw...