Cross reference everything from everyone, but do not inherently distrust an article merely from reading its source. The quality of an outlet varies quite widely from article to article as well as depending on it's context. Xinhua is usually perfectly fine, and others times (like the Senkakus/Diayous incidents) it can read like pravda-lite.
Two roads diverged in a yellow wood,
And sorry I could not travel both
And be one traveler, long I stood
Two roads diverged in a wood, and I,
I took the one less traveled by,
And that has made all the difference.