Thanks Brian.
BTW, I attended a PowerPivotPro users meeting in Redmond yesterday and regarding ISFILTERED syntax for applying logic at different levels of hierarchy, I was advised as best practice to always supply the lowest hierarchy item as the first ISFILTERED condition, and to travel up the hierarchy.
I have not actually testing to see if this made a difference for me but I thought I would post this in case someone else reads.
--Quote me