I'll always love the GCN version more, but I think this is probably the definitive version of the game. They fixed a couple minor annoyances from the GCN version, and made the game look visually even better. The Cave of Shadows was a cool addition too, having to fight enemies as wolf that you wouldn't normally try as wolf, though it sucks that you need an Amiibo to get into it.
They also really messed up the horse controls somehow, though it just takes a bit to get used to.

It's the same great game. It's a wonderful experience no matter which version you play.