Shisha Strawberry
Cherimoya
Peach
Hard to argue with those 3, the first 3 that come to my mind as well.
To add to the list though I enjoy these fruit flavor from INW as well:
Two Apples (more of a Apple Cider but sure is tasty)
Ananas from there e-aromat line (Pineapple, not the Shisha Pineapple that I am not a fan of)
Shisha Orange (much better than there standard orange to me)
I do enjoy the Cocopilada but I don't think it is a really popular flavor. Cocopilada is more coconut with a little Pineapple as opposed to the INW Pinacolada which is more Pineapple with a little Coconut, there both good.