Oahu. Nice enough city (Honolulu), great beaches and tropical climate all on a compact island thousands of miles from anywhere in the Pacific Ocean.
No, no no no. If you are ever going to visit Hawaii, go to one of the other islands, but stay off Oahu. Trust me, there are so many better options for a vacation than here. Your first thought is, "Yay, nice island paradise," but you don't realize that most of the island is a concrete jungle.
London in the Pacific, as a friend calls it.