THIS IS ACTUALLY THE QUESTION, ANSWER BELOW PLEASE I want to train smithing using sacred clay tools, I know volatile gives 120% XP bonus while morphic gives 100%, and I know volatile changes into other tools and you have to spend charge to make it back into a hammer. But does the increased XP from volatile even out with it's lower duration?
Morphic is better as you don't waste charges.
But better yet is just to level without stealing creation items - its quicker owing to the time you spend collecting points in the game. Only use them if you need to spend a lot of money on bars and don't mind wasting a few hours on stealing creation.