Considering buying either a Masrermind or Endless Nightmare. Have not thrown a DV8 since the Hellraiser but I really liked that ball. Still have a Nexus that I like and use from time to time.

I have not seen any post comparing the two balls. Let me know your thoughts about how they compare.

All things being equal, I would go with the Mastermind based on the 135/154 price.

I am looking for a ball to use on longer sports shot with not as much friction outside.  My PAP is 6 over3/4 up, and ball speed 14-16 quibica. What I would like by way of reaction would be for the ball to pickup in the midlane with a controlled, strong and consistent move on the back. When I say strong, I mean a defined consistent movement, not necessarily covering mega boards, as this is not going to happen on a longer sport shot with my rev rate and speed.

I agree with what Chris stated. With the description you gave, and what your looking for the Mastermind will be great. Obviously the Endless will be great too, but Mastermind is a little more and it looks to be more at the downlane.