While I think the previous game has better characters and a better story, the gameplay improvements/options more then make up for it which makes this a superior game in my opinion.

Sacred Stones tells the stories of twins Ephraim and Eirirka. At one point you get to choose which one you want to follow before meeting back up later. The story is classic Fire Emblem with some good twists but overall nothing too surprising happens. Unlike the previous games there are plenty of opportunities to grind and some great side content with the tower and temple. I feel that makes the game much easier since my units were so powerful by the end after all those quests, that I beat the final boss in 3 hits.

Highly recommended and the peak of gba Fire Emblem