The Immortal Solid is very aggressive, sometimes a little to aggressive I find. If there is any early friction, this ball can use up the energy a little to soon. Creating what looks like roll out or no hook in the backend part of the lane.
The Ogre Solid is a different type of motion, this ball starts up a little quicker but still has energy for the back part of the lane. I also feel the Ogre Solid is easier to make minor adjustments with as far as the coverstock goes.
The Centaur AMB Particle that getuaload is referring to on the other hand is completely different type of motion. This ball is a tough to play with. The Particle makes it start up so early on the lane that you MUST have a higher volume oil pattern on the lane for it to have any motion in the back end. Without the higher volume, this ball starts up at about 20 feet and has nothing for the back.
Hope this helps some
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George Palumbo
Visionary Bowling Products West Coast Sales Rep
VBPwest@yahoo.com
http://www.freewebs.com/vbpwest/Edited on 3/5/2008 3:57 PM