PositionChange Or SelectionChange event

I have a dataviewgrid (master) and below the details in another datagridview (childrecords).

When I navigate through the mastergrid I want of cource to synchronize the childs.

This moment I do this with PositionChange event.

But is is a good solution to use the SelectionChange event of the dgv instead of the positionchageevent

reason when I requery the table I use in mastergrid in another form (I use businessobjects) then the positionchage event is also firing. So I have turn of the pos-event.

When I use just simple the sleectionchangeevent (or another better event of dgv) I think the control over the grid is better.

thanks