Going 3DS.
Not only did it have ports of Nintendo 64 games... I.E. StarFox 3D, Ocarina of Time 3D, Majoras Mask 3D... But they are arguably the best and "definitive" versions of those games.
You also have Virtual Console so you have a plethora of NES, SNES, Gameboy, Gameboy Colour, Gamegear and if you were an Ambassador, some GBA games as well.
And of course native DS backwards compatability.
It is the only console where you can play all of: Pokemon Red/Blue/Yellow/Green, Gold/Silver, Crystal, Diamond/Pearl/Platinum, HeartGold/SoulSilver, Black/White, Black 2/White 2, X/Y, Omega Ruby/Alpha Sapphire, Sun/Moon, Ultra Sun/Ultra Moon.
Pokemon eat your heart out.
The 3D display is also fairly unique and is likely a feature that will -only- exist on the 3DS... Motion controls pioneered on the Wii has been done to death since and has been included on the WiiU and Switch... And the idea emulated by Microsoft with Kinect and Sony with the Move.
--::{PC Gaming Master Race}::--