And you only have to worry about crossfire issues. I went for two 970s instead of a 980. Sli never again. One 1080 is still going to be objectively better than two of any cheaper card in sli for that reason alone.
It's impressive that they're selling it at such a low price, but one card for me.
Disclaimer: I am aware of the difference between sli and crossfire. Both have undeniably annoying issues in many titles.