How to: recommend and express preferences

Arnau: Hey, Ferran, have you seen any good books recently?
Ferran: Yes, one or two. Have you?
Arnau: No. What about this one? Is it any good?
Ferran: I'd only recommend that if you like really horror books.
Arnau: No, I don't fancy that.
Ferran: Jere you are. You might prefer this.
Arnau: What's that? The boy in the Striped Pyjamas? No, I'm not a big fan of the tragedias.
Ferran: A comedy... er ... OK, well, try this one. It's got a really funny plot. I think you'll like it.
Arnau: OK. I'll trust you. Thanks, Ferran.
Ferran: No problem.