I know that the Tamarijn and the Dive resorts are famous about there All Inclusive deals. Divi and Tamarijn works together so you can enjoy the restaurants of both resorts.
Personally I never go All Inclusive. There are just to many nice and good restaurants on the island to enjoy. When we go to Egypt for a scuba vacation we always go All Inclusive. It is just to dangerous to leave the resort property. But for Aruba.. It is not dangerous at all. And the restaurants are easy to reach. That is why we never go All Inclusive. But this is our opinion.