Jim,
I am not (as a relative novice!) aware of major
advantages/disadvntages to either. Where there is a choice, my own preference
is SUMPRODUCT simply because I find it "easier" to understand and/or because
of my own lack of knowledge on array formulae [which is improving thanks to
the many expert contributors to the Excel NGs].


Maybe horses for courses?

"JimMay" wrote:

Is there clear criteria for going with a
Control-array formula over the Sumproduct() formula?

Or is it as simple as:
If the Sumproduct() formula "doesn't work"
Do a re-write assemblying a CSE formula.

All comments MOST welcome.