We have as many Macs as Windows laptops. Needless to say that those are two very different worlds that meet at Office. Usually Office works as expected. Windows Office is more reliable and has richer functionality but Office for Mac appears more stylish in the eyes of Mac lovers. The issue is that El Captain, a new iOS update, and Office don’t get on. Don’t allow for OS upgrades without testing core apps.
Hard to argue with not going with the latest Macs considering build quality and price. Office 2016 works well.
However Power Pivot is still not in the latest Excel for Mac. But do you really want it? I know I do.