Reader's dilemma

Evernight - Kristen Callihan Isla and the Happily Ever After - Stephanie Perkins

Reader's dilemma: finish reading the awesome historical fantasy I just started today (Evernight), or jump into the third book of a series I've been waiting to finish a long time that just released (Isla and the Happily Ever After)?

I might just trade between both of them, but I really want to finish one of them tonight.


(I posted this status a little earlier on GR, but at present, I'm reading between both of these books, and so far - so good.  Hopefully this is the start of a good book streak for me, because I've needed that for a little while now.)