Bob, have you tried Easy ISO? It is even easier then hitting the ISO button on the left top with the left hand and then selecting a value with the command wheel with the right hand.
When switching back and forth between the D800 and D7000 quickly as I did in the wedding and very long party that followed Friday the only control that I kept getting wrong was if zooming in on the just shot image on the rear display. I never had to dive into menus on either. Stan St Petersburg Russia