You can't go wrong with either ball on a THS. I agree with tommymo in that the Genius will read the midlane a little sooner, and both have a strong backend reaction. I have used both balls that were drilled similarly, and I have had greater success on a THS with the Mastermind Genius in my area.
If you go with the DV8 line, a good lineup would be a Ruckus with 2000 surface or polish, Diva with 2000 surface or polish, Diva Pearl. The Dude would be a little smoother overall than the Diva.
If you go with the Brunswick line, a good lineup would be a Mastermind Genius, Melee Cross with 2000 surface, and Melee with polish. The lt-48 would be a little weaker than the Melee.