Great that you are enjoying it so much !
It is seriously an underrated system (with some flaws....obviously) .
...as for the games: You can´t go wrong with any of the Nintendo heavy hitters, they are all excellent !
As for the underappreciated gems: Lego City Undercover, ZombiU and Deus Ex: Human Revolution Director´s cut make fantastic use of the gamepad, please check them out !