New ball to add to my arsenal - Suggestions?

[Swerve7]

Having currently returned to bowling I have purchased some new equipment. I'm using a Roto Grip Hyper Cell, Storm Optimus and just a Storm Polar Ice for Spares.

I'm interested in what you guys would recommend for more Light/Medium Oil from Storm/Roto to add to my collection?

Thanks

 

[Loose Cannon]

A storm hyroad pearl would be a good addition, similar thru the front like the optimus the hyroad pearl rolls really smooth from start to finish. The Roto grip wrecker is a good skid flip ball and hits hard.