Quote Originally Posted by HugMeTender View Post
So I have max leveled (for current limit breaks) all my Eidolon and I've already got a full inventory of R enhance materials... Should I just sell them and keep the SR enhance? I discovered than leveling them doesn't stack exp gain additively.
The exp gain isn't worth leveling the enhance mats in regular scenarios but if you have nothing else to level and need some inventory space, then you do that over selling them unless you really need to the room. Don't bother break limiting them though as that'll use gems. Selling isn't worth it when you're only 10 gems per item unless you literally have no other options.

Don't forget you can always enhance kamihimes with weapons to level them if you have excess weapon mats and that items in your gift box can stay in there forever if located in the no expiration tab.