In general, if YOU had to choose between one to be canon, which is it?
“I don’t believe in the no-win scenario.”
Seriously though, I already consider a sizeable portion of the EU part of my personal canon – including the post-ROTJ stuff with Thrawn and Mara Jade and the Solo kids (not the godforsaken NJO/Legacy stuff, though); by default, TFA is rendered non-canon to me.