Investors looking for the "perfect" financial company may not have to look further than Markel (MKL 2.05%) and Berkshire Hathaway (BRK.A 0.96%) (BRK.B 0.98%). But what exactly is it about Markel and Berkshire that make them so great for investors?

In this segment from The Motley Fool's everything-financials show, Where the Money Is, banking analysts David Hanson and Matt Koppenheffer take a question from their mailbox about what makes a perfect financial company. Matt and David provide their take, as well as some other – non-Markel and Berkshire – financial companies that come nearest to perfection.