Which is worse?
Finding a book you love and then hating everything else you try by that author, or
Reading a completely disappointing book by an author that you love?
I would definitely say finding a book you love and then hating everything else you try by that author. If you don't like a book or two by a favorite author at least you have the hope that their next book might be great, and the reassurance that you have liked more than one of their books.
If an author only has one book that you love, it's disappointing to keep reading their work and not find anything else that measures up...
Which is worse for you?