Yup, there are many other dedicated kama'aina out there willing to help (
FlyinHawaiian being one of those especially helpful kinda guys).
I've personally never been to Lana'i or Moloka'i, which I think is a big mistake on my behalf. We have always had plans to visit but Lana'i is extremely expensive... but there's really no excuse for Moloka'i. Riding a mule sure beats the heck out of driving in gridlock on the H-1 anyday.
My best beach experiences are:
1. Hanalei Bay
2. Anything Wailea or Makena side on Maui
3. Lanikai
4. Makapu'u
5. ... and right off the HHV Lagoon... it's just a special spot
Of course, guidebooks and magazines will always give different answers... oh well.
Aloha