are 200 miles apart by car, Then if you want to do Skywalk which really Southeast view That is 250 from the south and 390 from the North.

So if you are only going to look
From Vegas do the Skywalk.
From PHX do the South.
From Utah do the North.

All are spectacular for different reasons. After all it is THE GRAND CANYON

In my opinion the North is better.

There is one view that I have not yet seen but from pictures is by far the best and that is Toroweap on the Northside but it is 60 miles on dirt roads...