Big Island with a one day,day trip to visit Pearl Harbor. Have spent time on every inhabited island except Nihau. The Varity available on the Big Island is awesome.
I have newbys coming over next month that want to see all the islands in a week.

There is so much to see here; a week does not even come close.
Flew tours on four islands before retiring. This is the BEST island in my opinion. Maybe EX living on an another island shades my opinion.