In some ways, ExxonMobil (NYSE: XOM) and Chevron (NYSE: CVX) could be viewed as interchangeable energy investments. Exxon and its $625 billion market is a bigger company, but Chevron and its $375 billion market cap isn't far behind. The most notable difference is the dividend, which is why income seekers will probably want to go with Chevron right now. Here's what you need to know. Giant, financially strong, and diversified businesses Exxon and Chevron are both integrated energy companies, which means ...