I respectfully disagree about big island/Kona. I have had a great time every visit, Hapuna beach is just a half hour drive up the coast. And the volcano is spectacular.
Having said that I prefer Kauai... lots of sandy beaches... one of the PPOTers here has a condo he rents.
Oahu and Maui are nice... just a little touristy for my taste, but depend on what you are looking for in a vacation. Water sports? Hiking? Kicking on the beach with a good book?
Kauai 2007:
