Ryan,
I had an Ogre and Ogre Pearl when I was throwing 16 lb. equipment. I dropped down to 15 several months back and am finally used to it enough to order new equipment (I've been throwing some used and cheap 15lb stuff to make sure I'd like the change).
When ordering my new 15lb Visionary stuff I actually thought the same thing about the Ogre and Gladiator overlapping. Therefore, I decided to just try out the Gladiator. However, I did pick up an Immortal Solid to be my heavy oil ball. I also picked up a Green/Blue Centaur since I really liked the reaction I got from the 16lb. one I had before. I didn't get an Ogre Pearl because I have a NIB Vapor Zone that I plan on drilling up, and I thought that would overlap as well.
So my new arsenal will be set up like this. I believe it will handle anything and everything I will see.
Immortal Solid
Gladiator Solid
Vapor Zone
Green/Blue Centaur
Columbia Jazz
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-Corey
Visionary Test Staff Member '07-'08