If you want backend reaction, there are probably 999  balls that fit that description.  We would need to know your speed, axis rotation, axis tilt and rev rate.  The two balls you mentioned are not in the same church, let alone the same pew.
It would be great to provide your personal specs., including what type of lane surface you bowl on, the type of shot (THS, Sport, other). Help is available, but without the above, any answer would be a stab in the dark.