Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, I recommend focusing on each character’s strengths. Customize their path to maximize their potential in combat. Don’t be afraid to mix and match abilities from different paths to create unique character builds.

For side quests, make sure to complete the Monster Arena challenges for valuable rewards and tough battles. Don’t forget about the Celestial Weapons quests for each character – they’re powerful tools for taking on the toughest foes.

As for character builds, experiment with different strategies to find what works best for your playstyle. Whether you prefer physical attackers, magic users, or support characters, there’s a path on the sphere grid to suit your needs. And don’t underestimate the power of abilities like Quick Hit or Doublecast – they can turn the tide of battle in your favor. Happy exploring!