Diversifaction is important for most investors, so would you rather have your money in three index funds or Warren Buffett's conglomerate of great business, Berkshire Hathaway (BRK.A 1.01%) (BRK.B 1.11%)? In this segment from The Motley Fool's everything-financials show, Where the Money Is, banking analysts David Hanson and Brendan Mathews take a question from their mailbag about diversification and tell viewers which route they would go.