Buffett has been preferring this high-yield opportunity for a couple of years now.Warren Buffett is one of the most widely respected investors in the world. And there's a good reason. With nearly 70 years investing in the public eye, he's produced incredible returns for anyone willing to invest alongside him. He recently saw the value of Berkshire Hathaway (BRK.A -2.00%) (BRK.B -1.83%) surpass $1 trillion. It's come a long way from the $22 million company Buffett took over in 1965, largely on the back of Bu ...