12 months ago the RD got the best reviews, was the strongest ball, and was supposed to be the next best thing. Now, it's not strong enough for the Shark pattern? I don't buy that. Personally, the last time I bowled on Shark, I used a pin down Nomad Solid and it was plenty ball.
Logan, I think the RD is plenty ball for what you need. I don't know your style, revs, etc., nor the surface you will be on, but I would adjust the surface if needed after your first session.