It does depend on how you want to stay. I'm surprised Hilton Head was cheaper, but then I haven't priced it too much, just glanced, although I did look at Myrtle Beach. I've thought about going back to St. Thomas or St. Johns, but haven't looked into it as much as I should since I was on a cruise last time and only had one fare to pay for! I feel bad since my daughter has only been to the beach once and we live 4 hrs away. LOL! I should be ashamed!
Hilton Head rooms were the same as Disney, but since we didn't have park tickets to pay for, HH was a far cheaper vacation.