Wii and it's not even close. Galaxy, Pikmin releases (the new play control versions are incredible), a decent RPG selection (no matter Xenoblade not being to my tastes), a big library with many good games.
N64 is the worst console Nintendo have ever put out. Nothing outside of 3D platformers, Snap and OOT - and none of its games have aged well at all (except Paper Mario and Pokemon Snap), they're pretty much all borderline unplayable today.