a friend of mine just got his vehicle broken into , and yes, got all 3 of his bowling balls taken ( black onyx vibe, freeze, older pirahna-c )  So he throws about 15 ish mph, and has a pretty low rev rate.. Hes a tweener , covers about 10 boards or so..  

Hes been looking at virtual Energys, 3.5 c systems etc.. Lots of hi end stuff for heavy oil.. I suggested  a mission, ( if he wanted that top of the line easIER to control ball )  but told him that with his ball speed and around 220ish  revs im guessing, A Hyroad, a cell pearl , nomad ( solid or pearl ) reign of fire etc.. Luckily my friend is giving him an undrilled freeze , so he doesnt want anything like that .. But from what ive seen so far.. even the freeze was o much for him..  But heres I think why he wants a big expensive ball, Is because they do have a better core, and will hit harder under some conditions..

Even when hes squared up and crushes the pocket , there really isnt a ton of pin action.. So what do you guys think ?
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Brunswick Diamondback
Brunswick T-Zone
Brunswick Black Ice Zone
Columbia 300 Freeze

17 mph ball speed
360 Rev

Work in progress

I think Hyroad or a Rogue cell will work! For a house shot.
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Roto Grip and Storm why throw anything else!

Columbia 300 claims The Bedlam is a tweeners dream. Its a good ball for about $120.

I'd categorize 220 RPMs as a stroker, NOT a tweener.  

That said, if he's got a ball that's long and strong (Freeze), get him something that's rolly and not long and strong.  I'd suggest something from Brunswick, the Reign of Fire, or Nomad Solid.  In the 100-130 price range.
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Proud Supporter of Rob Stone
Obviously, you aren't a golfer.
Some stayed in the foothills, some washed logs like teeth.