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:ACE) and Platinum Underwriters (UNKNOWN:PTP.DL) could be great opportunities.