Board Thread:Questions and Answers/@comment-24875031-20160808132407/@comment-24956068-20160810044022

It depends on how your Crystal engine is.. If you have a strong Crystal engine, using option #2 might not be a problem at all.

However, if you don't have a lot of Crystal-generating treasures, and you're having numbers of extra treasures you would like to throw away and extract, then using option #1 is preferred.

I personally would take the mixture between both strategy - Whenever I have a treasure that I'd really like to evolve, I'm using Crystal (just in case it is blessed, that's good because I would only spend 99 Crystals once). If I have a treasure that I would like to throw away, use coins and evolve them before extracting.