Venator Pearl is stronger and more angular off the spot than the RBC and RB Longhorn, I would say VP is 2-3 boards stronger overall.
Venator is stronger than the Stampede and More angular off the spot gets back from more spots on the lane. Venator is weaker than the Raging Bull, RB is earlier and heavier rolling off the spot handles more volume.
IMO you could mix and match to create an aresenal very easily. Or go with one or the other both options would work. And all balls in both lines are versatile.