SHEET, of the older stuff the Assault line seemed the most aggressive.  I've got a Major assault and a Global Assault and they're very aggressive.  Whatever the current line equivalent is would be my bet for the most aggressive.  Jeffrevs would know, I haven't kept up with the newer stuff, I'm happy with my older stuff.
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Just run to the line, plant and heave.

"Things fall apart; the center cannot hold;
Mere anarchy is loosed upon the world,"

Sheet,

Drillings or surface changes can make balls more aggressive also.
Placing pins in the 2.5" - 3.5" range and/or lowering their position to at or well below the ring finger can make them roll much earlier, IF your track permits such. Kicking the CG out and then placing a weight hole 3" below your axis point will also make the ball flare a lot more, making it more aggressive also.
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"We get old too fast, and too late, smart."

If I am correct in reading your post, and it is that you are looking for earlier hook, as in making a move sooner, then probably the SS Particle or Rush. Although I haven't thrown either, seeing them used, and from posts here they seem to fit that bill. But JeffRevs or Mustang Guy would be more help. Don't forget you can always call Mustang Guy (Roger) at the factory 800#. He has helped many on this board with ball selection, and layouts.
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