Quote Originally Posted by Oxygent View Post
Actually, который may sound very natural here, if it is used in a sentence like this: "Который из этих фруктов тебе нравится (тебе больше нравится)?" - "Which one of these fruits do you like (do you like more)?"

There are more cases where you can use "который" not only as a Relative pronoun, usually in "Which one.." questions.
So, when I say what kind of... it´s more usual какой than который, but when I say which one... there´s no problem to use который?