I was fortunate enough to receive a sleeve of test balls in the fall of 2014.  I previously played a ProV1.  The test ball was better overall - better distance and around the greens - how can I find out which ball I tested because as the new season approaches and the new ProV's are out its time to pick up some balls.  How do I know which ball I tested ProV1 or ProV1x?
Thanks Titleist for the opportunity to test and provide my response via the survey.  
or should I buy a sleeve of each and do my own new fitting.?