Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, don’t be afraid to branch out and experiment with different paths for your characters. It can be beneficial to mix both standard and expert spheres to maximize your stats and abilities.

For side quests, make sure to complete the Monster Arena challenges for some epic battles and rewards. Also, don’t forget about the Celestial Weapons quests for ultimate weapons for your characters.

In terms of character builds, focus on each character’s strengths. For example, Tidus is great for speed and agility, while Auron excels in strength and defense. Customize each character’s grid to complement their natural abilities and roles in battle. Happy exploring!