I just recently purchased both the Command and Arc Zone balls and improved my average 25 pins easily. Both these bowling balls compliment each other very well. I use to carry four balls to the lanes but now only two is all I need. Has anyone else have the same impression on this equipment and any tips on how to keep them useful. I am R/H full finger tip bowler with an agressive hook. I usually start from just left of center and drive between the 12 and 10 boards. I found this type of delivery to be consistent and very powerful on the backend. I don't rev the ball up very high and basically just throw a soft forward roll with the ball breaking at approx 5to6 degree angle to the 1 3 pins. My highest series ussing these balls so far is 711 and my lowest is a 576. I have bowled approx 29 games so far. :p