In this segment of The Motley Fool's financials-focused show, Where the Money Is, banking analysts David Hanson and Matt Koppenheffer rank insurance stocks. The stocks ranked include: Berkshire Hathaway (BRK.A -0.41%) (BRK.B -0.04%), Markel (MKL -1.11%), AIG (AIG -3.06%), and Aflac (AFL -1.42%). Berkshire Hathaway may be No.1 in the guy's hearts, but it is it also the top pick in their rankings?