Which GBA role-playing game had the best battle system?

[killamch89]

The Game Boy Advance era boasted a variety of memorable role-playing games, each experimenting with turn-based, active time, and specialized battle systems. Whether you enjoyed strategic command queues, real-time action hybrids, or inventive status mechanics, the GBA delivered depth on the go. Which GBA RPG impressed you most with its battle system design? What elements like speed tuning, combo chaining, character synergy, or resource management kept you engaged? Did it feature novel interfaces, tactical positioning, or unique class interactions?

[Scorpion]

For me, it has to be Mario & Luigi: Superstar Saga. The active battle system with timed button presses for attacks and defense was revolutionary. It made every single turn engaging, turning standard RPG combat into a fun, reflex-based challenge.