Buffett's huge position in this stock speaks volumes.Berkshire Hathaway's record-high cash stockpile might give some investors the wrong impression. Warren Buffett isn't completely avoiding buying stocks. Granted, he's being very selective -- but that's nothing new for the legendary investor.Buffett recently bought eight stocks. And I think one of them is the best of the bunch for income investors.All the stocks Buffett boughtBuffett initiated new positions in two stocks during Q2. He bought over 1 million ...