Final fantasy XVI or final fantasy rebirth?

Ok so both games are on sale right now, I can only afford one tho, I'm mainly looking for the game that has the better gameplay and I mean:

Combat system. Exploration Epic battles Mechanics of the game (puzzles, secret chests all that stuff) And the most important thing, replayability I want the game that has the potential to keep me playing multiple times.

If someone could help I would absolutely appreciate it. Also I have played remake