I don't think RPM is a good hybrid choice. It performs best in the first couple of hours after stringing, so the Pros like it, but it's a small window of optimum performance.
PHT is a better choice, but it's overpriced as well.
Better may be SPPP, Big Hitter, or Red Code.
Of course, if you have to have black... Black Magic. B5E, and even ZoTwist are all good alternatives.
I'm sure others will have their faves, too.