Legendary investor Warren Buffett's track record can stand up to anyone's. The Oracle of Omaha is one of the best value investors in the world, using a simple investing philosophy of choosing well-established companies that are leaders in their field and have strong management, earnings, and a sustainable dividend. Buffett usually shuns tech stocks, so Chinese electric vehicle (EV) company BYD (BYDDY 0.78%) is an odd choice for Berkshire. And truth be told, Buffett didn't make this selection himself -- Berk ...