SQL Server 2012: Multidimensional vs tabular

To expand on what I talked about in SQL Server 2012 ("Denali"): Details on the next version of SSAS, there is a new data model called Tabular. So when you are creating a new project, which model should you use, Multidimensional vs Tabular? Well, there is no clear-cut answer, but there are some factors that can make you choose one over the other: