I am picking up the FE: Awakening bundle next week and was planning on buying another game to play. I had a 3DS previously but sold it due to lack of games and to afford an Xbox. Fire Emblem and Monster Hunter have brought me back to the 3DS on their own but I wouldn't mind some other great games that I missed in my absence.
Currently Playing; Goldeneye 007, RE: Mercenaries 3D, LoZ: OoT 3D
If you have an Xbox, wait to get Revelations on that (unless you have 3DS friends to play with). If you've never played a good Tales, get Abyss, might as well play the worst first. If you played 999 on DS, get Virtue's Last Reward.