First of all you need to figure out what kind of a bowler you are.
Are you a stroker, tweener, or hi-rev power player?
Strokers - Norm Duke, Walter Ray Williams, Brian Voss, Eric Forkel.
Tweeners - Wiseman, Patrick Allen, Parker Bohn III, Doug Kent, Pete Weber.
Cranker (Hi-Rev Power Player) - Robert Smith, Tommy Jones, Jason Couch, Steve Hoskins, Ryan Shafer.
Once you figure out where you fit, go to the Brunswick web site and look up the drilling recommendations for the Bruiser that fit your style and will match up with the lane conditions that you think you'll be playing on.