I'm planning on picking up 2 new balls in the next month or so, looking for a ball up and a ball down to compliment my Storm Sync (500-4000 finish), the main ball I'm currently using in leagues on our medium THS.  I'm lacking both a good light oil and a good heavy oil option.  I like the overall shape and angular backend the Sync gives me, and do pretty well with it on medium conditions, so would like the new balls to shape similarly.  Stroker mainly, maybe a tweener.  I've had decent luck with Storm, Roto, and Hammer.  Suggestions?

Stronger option: Hammer Rip'd solid, Storm Sure Lock,
Weaker ball: anything shiny.  Can't go wrong with a hyroad hybrid, or even the hyroad pearl.  However something like a all out show off, hustle ink, or a matchup may be a better dry lanes peice.