datagrid - WPF data grid for financial style reporting? -

I'm looking for a decent WPF data grid or solution in which there is one to represent financial data.

I have seen many people - WPF One, XCD, experts, DAVE EXPERS etc. ... but none of these offers me a simple requirement:

I want to be able to display the group subtotals in their columns on the group line, e.g.

  Group 1 xxxx.xx Group 2 xxxx.xx RAVE 1 xx.xx RAO 2 xx.xx  

Does anyone who knows a grid , Or a good support archive that enforces total tasks (group formulations will need to be used in individual line items) so that existing grids work with some XAMM styling?

In advance, Stephen

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