My vote goes to Mattermark and the Mattermark daily as well. Mattermark initially came to my attention through this post from Brad Feld -

http://www.feld.com/archives/2015/12/dont-follow-vc-blogs-anymore.html

It turns out Brad's also an investor, which I didn't realize when I subscribed to the Mattermark Daily -

http://www.feld.com/archives/2014/12/mattermark-example-decide-invest.html

Nevertheless, I'm happy to be a subscriber to such a well curated source of daily news about the VC and Startup world!