Quote Originally Posted by Unregistered View Post
I wonder if I should start exchanging a few for grails.
Cores will be used for level 150 limit breaks too, but the numbers were not all that great. I think. Those things are so far away I haven't properly looked at them.

Each R Grail will save you what, 2000 Gems? Yeah, not worth it in the slightest. Just stockpile the Cores.