At the Motley Fool, we tend to think that the best investing approach is to find great companies and hold on to them for the ultra-long term. With that in mind, we asked three of our investors to profile a company that has what it takes to deliver strong performance over the next five decades. Read on to see why they selected Boeing (NYSE: BA), Colgate-Palmolive (NYSE: CL), and Amazon (NASDAQ: AMZN).