My rating system is as follows: I rate series based on how much I enjoyed them, having as the only exception shows that I genuinely believe are bad. 1-4: Varying degrees of crap. Hard to tell which are 'better' than others in this range. 5: Probably weird but I don't regret watching. 6-9: Enjoyed all of these, the higher the score, the more I enjoyed the show. 10: Masterpiece. All time favorite. I try to use this sparingly.