Within the financial sector, there are banks, insurance companies, REITs, and more, but which area holds the most opportunity for long-term investors?

In this segment of The Motley Fool's financials-focused show, Where the Money Is, banking analysts Matt Koppenheffer and David Hanson rank their five favorite areas of the financial sector and tell investors why they think ACE (NYSE:CB) and Platinum Underwriters (NYSE: PTP) could be great opportunities.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.