Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, I recommend focusing on each character’s strengths. For example, Tidus is great for agility and Wakka for accuracy, so prioritize those nodes for them. Don’t be afraid to mix and match different paths to create unique character builds.

For side quests, definitely try your hand at capturing monsters for the Monster Arena. It’s a great way to earn rewards and power up your aeons. Also, don’t forget about the celestial weapons – they’re tough to obtain but totally worth it for the boost in power they provide.

Lastly, experiment with different character builds to find what works best for your playstyle. Whether you prefer brute strength, magic prowess, or a balanced approach, there are plenty of options to customize your party members. Happy exploring!