Coca-Cola has been an investor favorite for decades, and for good reason. But is the soft drink giant a good stock to buy today?Soft drink giant Coca-Cola (KO 0.58%) can be a polarizing stock. Longtime owners absolutely love the company's rock-steady business and generous dividend. Newer investors are often less impressed by Coke's modest growth prospects.Is Coca-Cola stock a good buy today? That depends on your investment style and expectations. Let me walk you through the ups and downs of buying Coca-Cola ...