Shining Force II was the first RPG I played to completion and has aged pretty well when I played it on the Sega HD collection for PS3. I'm hoping Atlus does something with it since they showed an interest in bringing back SEGA's older franchises.

Tactics Ogre: Let Us Cling Together is the high watermark of the sub genre IMHO. It's a masterpiece in every way a game can be but the PSP remake has the most impressive mastery of game mechanics that I've seen.

Valkyria Chronicles is the evolution of this subgenre and it seems only right that it came from SEGA. The PS3 original is a wonderful game and the PSP sequel is even better in some ways.