The Revenge, of all the balls I have owned (maybe 75 of them) has been THE biggest source of grief and the most confusing love/hate relationship (if you can have that with a bowling ball) that I have ever had. I know it's a great ball and I have played with 3 of them, 2 of them brand new which I paid for, one of them 16 lbs. I have drilled it label, stacked leverage, pin above the bridge, pin  above the bridge. I have altered the surface 16 ways from sunday, as the saying goes. I've done everything except throw the damn thing down the lane overhand and, Boy, have I been tempted to do that. All this over a 3-4 year period.

I finally polished it to about 1500 grit, put the pin under the bridge and drilled it 5x4, for around a 60 degree, 10:30 drilling. I now get a medium to medium large hook on medium-light to barely medium oil pattern, without carrydown. It hits nicely now.

My speed is about 16 mph, and my rev-rate slightly less than yours in 300-350 range, depending on circumstances.

Don't forget: it comes 1000 grit dull with medium-high RG of around 2.58, and medium-high flare potential of around 6". This is one ball where, as you can see, I don't care make any recommendations.

I have no idea what a "purple Predator" is, so I have no basis for comparison. I've seen red Predators (the original and the Sparkle), green Predators (Jungle Green) & red+blue Predators (Pursuit), but never a Purple one.
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"Those who do not remember history are doomed to repeat it."