Agreeing and disagreeing

Andreu : What do you think of the new Cressida Crowell book ?

Ferran : I like it. It's better than the las one.

Andreu : I disagree. I prefer the last one. It was more exciting!

Ferran : Yes, I suppose you're right. It was more exciting, but I like this one too.

Andreu : My favourite was the first one, How to Train Your Dragon.

Ferran : I agree. That was my favourite too.