Hmm, from the ones I've played (all North American releases except the new trio-set)
1. Path of Radiance
2. Radiant Dawn
3. Awakening (shit story, good characters, infinite side missions)
4. Sacred stones (you could level your dudes!)
5. Fire Emblem (first U.S. release, solid game but only got buried by the superiority of later installment)
6. Shadow Dragon (OK game, terrible in the series).