I like Vox, but I wouldn't follow them on Twitter. For this election cycle I've had fun reading the sometimes opposing thoughts of Yglesias, Matthews, and Klein. Klein in particular is a thoughtful, good read. I think Matthews is the big Sanders stumper, and I find myself agreeing less with his articles.
I think they do a great job providing summaries of (left-leaning, to be fair) perspectives and they have some interesting stuff overall. It tends to be a gateway to other articles and discussions.
My favorite publication is the NYT. I've read both good and stupid things on Slate, Vox, et. al. I think there's a definite step up in quality with the NYT, which isn't to say they have an exclusive hold on it! And it's definitely good to get different takes. Sometimes they're all in alignment, sometimes not and nobody seems to really go on the warpath about it when those differences crop up.
As for Beck, he seems to have literally gone insane.
... is that a recent thing?
But yeah, I am a little concerned about him. Is he still fasting?