Skyward Sword was better, much more original boss battles and dungeon. In Twilight Princess you have to use your item that you get in that specific dungeon to beat the boss, in Skyward Sword not. You have to use your Loftwing to defeat Levias and only your sword for Ghirahim, Bilocyte and...
I've made a top 3 list of my races:
Deku Scrubs are unique races in the Zelda series and I wish the had a bigger role in the Zelda games, but that isn't so yet. Nintendo can do much with the Deku Scrubs and they just don't do it.
Mogma's are just awesome by looking at them...
Midna, Kina, Groose, Cawlin, Twinrova Sisters, Staven (Byrne in the USA (I live in Europe)), Pipit, Epona, Hero's Shade, Sheik. My favourites are Staven and Midna, Staven because of his awesome theme and Midna because of her awesomeness.