I think Phil shouldn't do the grid.
Creating a grid like Telerik, Infragistics etc. is a lot of work.
Although it's not only the creation of this control, it's also the maintenance,
support, bug fixing, speed improvements ...
don't forget: this is a one man show ...
The needed time could be better spend doing the sweet little things around.
BTW:We needed a big grid too, so we bought another component suite on top
(Telerik, for triple price ...)