What to craft

SO i'm a diamond 5 guy, trying to push to Legend this month. I enjoy playing Hunter (face and highlander), and also Demon Hunter. I have most cards for these 2 classes, but I still need both Kayn Sunfury and Zixor, Apex Predator. I can only craft one. Which card is more important in its deck and is there an option for the other one?

Both are not really integral to winning matches with the decks you listed. But that's not to say they can't give you a leg up or two.

If I had to choose between them, I'd go Kayn Sunfury. So long as tempo dhunter exist in the meta, this will always be in it and will at some point be pivotal in some games.

Zixor is really good, but its usefulness is sometimes confined to drawing its prime version, so that's another layer of RNG there.

I would recommend checking hsreplay and put in your information into that.

Looks about the same-ish. But don't take my word for it... judge for yourself

Face Hunter shouldn't run Zixor so it's mostly about which deck you enjoy more, highlander hunter or aggro demon hunter. 

Both cards kind of fill the same role where they're good to have and will improve either deck, but not exactly mandatory.

Alright, I crafted Kayn. Thanks everyone =D

Much to my chagrin, Zixor, Apex Predator is probably your best bet.  I cannot stand the Hunter class, but cannot deny the efficacy of it right now.  I've played a bit of Demon Hunter and I think it is mostly due to the fact that it is new so there is really only one way to play the class, but I am left wanting more from Kayn Sunfury.  I have not encountered enough taunt to make me feel valid in crafting him.  I've just been using Illidari Felblade