I drilled a Virtual Energy with a 4 1/2 pin a 3 1/2 CG and a 4 1/4 Mass Bias.

I already had a Virtual Gravity with 4 1/2 pin 4 1/4 CG and a 4 ' Mass Bias.

Been bowling with both of them   on different Sport Patterns. I have found success with both. The Gravity is still very good on a longer or fresh pattern. When that started to burn and lose energy I switched to the Virtual Energy it did what it was supposed to do,  go a few feet further down the lane and store energy for the backend. Overall I would say the ball is great for medium conditions. When this ball becomes too strong my next move is to my HY Road.