Super Mario Galaxy 2 questions.

Simple I got a few questions I'm going to ask.
1)Do you own it?
2)Do you enjoy it?
3)What do you think is the hardest Galaxy?
4)What's your favorite feature of the game?
5)What's your favorite Galaxy?


My Answers:
1) Yes I do.
2) Of course! It's the best game ever!
3) I think the Grandmaster Galaxy and the Stone Cyclone Galaxy are the hardest ones.
4) The addition of Yoshi
5) Wild Glide Galaxy, Cosmic Cove Galaxy