Of the few games that I own:
1) Super Mario 3D Land
2) Fire Emblem
3) Donkey Kong Country Returns
The 3DS Professor Layton really hasn't grabbed me like the others have. I might be the new control scheme or maybe all of the puzzles have felt way too easy. Not sure.
I'm probably going to buy New Super Mario Bros. 2. I haven't played any of the New Super Mario Bros., so I don't think I'll have the same "been there, done that" fatigue as other people say that have for it.