We tested these 3 Motiv pieces.  We had a pin up vs pin down Venom Shock as well.

Covert Revolt is a great bowling ball from Motiv.  I can understand why the Primal Rage is popular with it being a little more late breaking and snappy, but the Covert is a strong ball that will give you a look on a lot of conditions.
The Venom Shock is actually a great compliment to the Covert Revolt in terms of ball motion and shape.

http://tamerbowling.com/index.php/motiv-covert-revolt-bowling-ball-review-digitrax/
http://tamerbowling.com/index.php/motiv-venom-shock-bowling-ball-review-with-digitrax-analysis/
http://tamerbowling.com/index.php/motiv-primal-rage-bowling-ball-review-digitrax/

What do you folks think?