I think I approached this incorrectly. Let's re-phrase this. What is something to fill the gap that my Hy-Road pearl would leave based on my lineup in my signature?
Below the Primal Fear and above a Ride. The two dirty bombs are pearl and solid respectfully drilled pin down for tournament use but I would still prefer to not overlap them. Medium oil ball preferred.
I have no familiarity whatsoever with the dirty bombs, but there's a big gap for something to go between the Primal Fear and Ride. Danger Zone, Fanatic, Ridiculous Pearl, Desert Ops, Special Ops, Infrared, X, Chemical X, Sideswipe, Sideswipe Solid, Rebel, Viral Solid, Heat, the upcoming Kinetic Emerald, Wreck-Em, !Q Tour, Fight, Street Fight, Venom Shock, Octane Burn, Venom Cobra, Forza GT, Chronic Paranoia, and Paranoia would all make sense in some fashion to me. Just depends on the motion you're going for.
For what it's worth the Hy-Road and Hy-Road Pearl are balls that really match up differently for everybody in my experience. Some play true to their core numbers while others get a more benchmark-type reaction. I always have a hard time recommending a replacement for one of those if I'm not familiar with someone's game.