I went to the Philippines with a spreadsheet. Eleven islands in sixteen days, colour-coded, ferry times cross-checked, every night booked. I came home having seen a lot of airports and almost nothing else.
The second trip, I picked four islands and stayed put. It was infinitely better. So this isn't a ranking of the prettiest beaches, because honestly, they're all absurd. It's a guide to which islands are worth the effort of actually getting to, and what each one gives you in return.