If you are looking for the few that might compliment your Cruel and Cruel LE, then I think picking up the Backdraft and possibly the Sigma Tour is your best bet.
Unless of course you don't feel that either of your Cruel's are strong enough, then you can grab the Raptor.
I love the archy shot of my OG Cruel. The LE is a lot more backend movement. For what I'm bowling on currently, I don't think I need more than LE.
I know the Backdraft would fit nicely in what I have currently plus I love the look of the ball. I'm just wondering if it would be worth picking up the Raptor and drilling similarly to my OG Cruel.