Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, don’t be afraid to mix things up and experiment with different paths for your characters. Try focusing on their strengths to maximize their potential in battles. For side quests, make sure to complete the Monster Arena challenges for unique rewards and tackle the optional aeons for additional power. As for character builds, consider customizing each character to have a specific role in your party, whether it’s a tank, healer, or damage dealer. And don’t forget to collect all the legendary weapons for that extra edge in tough battles! Happy exploring!