I know this has probably been posted 1000 times, but, I was wondering what a good ball from Brunswick would be to go with my Twisted. I would be looking for a ball that can handle medium oil with a decent back end. I throw with decent speed and decent revs (I've never had them measured so I can't give exacts). I really like the enMotion coverstock on the Twisted, but, I don't have to have it. I'm thinking the Ultra Zone? Any other thoughts?