The Optimum Idol has a low RG value of 2.47 which means it will rev up early and a high differential of 0.056, in which 0.060 is the max differential a ball can have.
The Optimum Idol  is the first  Roto Grip release that has the AI Core Technology.  AI Core Technology lowers the RG and raises the differential that creates a quicker roll and more surface contact with the lane.  In addition, the Optimum Idol also features the famous Ikon core that we have seen in all Idol releases.
As per the Microtrax Solid Reactive cover, you will see a combination of the optimum balance of midlane traction and responsiveness to friction thanks to the blend of nanoparticles throughout the coverstock. This formulation maintains its surface profile texture longer to ensure you get maximum performance while displacing oil at an above average rate compared to other coverstock materials on the market today.
I did a ball comparison to the original Roto Grip Idol and 900 Global Xponent at 42 ft house shot, 25 ml of oil.  The layout chosen 55 x 4 ¾ x 40. 3000 Grit used for review.
In comparison to the Original Idol, The Optimum Idol is at least 3 boards stronger downlane and starts up a little quicker.  As the Original Idol was good for was versatility within the ball surface where from the lowest to polish the Idol responds to what you need very well.
In comparison to the 900 Global Xponent, the Optimum Idol is a couple of boards stronger the Xponent which has a lower RG that’s fits just above an IQ tour solid.   
As per the surface adjustments, the Optimum’s box surface is 2000 grit Abralon which is a good starter surface for a fresh oiled THS.
For me, I put polish on top of the 2000 surface that gives me a little more length and a little sharper on the backend.
In the bag, will be the Eternity Pi, Optimum Idol, Attention Star and Zen Gold Label
Please pick up a Roto Grip Optimum Idol at a Striking Results Proshop near you and please like and subscribe to my page Beyond the Arrows Ball reviews.  Use my coupon code Patrick300 on your first purchase of a Bowlifi jersey and get $5.00 off or $5.00 off a $50.00 or more purchase.

The Roto Grip Optimum Idol features the same Micro Trax reactive coverstock and Ikon core as the hugely successful original Ido.  However, the Optimum features the new A.I. core technology, which in my opinion makes this ball even better than the original Idol.  At 15 pounds the RG is a low 2.47 with a differential of .056.  I drilled my Optimum Idol the same as my original, 5x4x2 which puts the pin above my middle finger.  The Optimum Idol has the same motion as the original…it starts up very early, controls the midlane and has an even arcing backend motion.   This ball is perfect for medium/medium heavy oil patterns.  The A.I. core creates even more pin action than the original.  If you had the original and have been looking for a replacement, you won’t find anything closer than this.  If you never had the Idol, don’t miss out on this one, you won’t be disappointed.  This ball should be in every tournament bowler’s bag.  Power, control, and versatility all in one!!!