Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, I recommend focusing on each character’s strengths. Don’t be afraid to mix and match different paths to create unique character builds. Side quests are a great way to earn valuable items and experience – make sure to complete the monster arena challenges and the celestial weapons quests for some powerful gear. And don’t forget to customize your characters with abilities from captured fiends to enhance their strengths even further. Happy exploring!