<4 – Below average. Avoid at all costs.
5 – Mediocre/Average. Your run-of-the-mill, generic anime. Defines 'Meh'.
6 – Slightly above average. Had some promise, but fell flat on execution.
7 – Good. Recommendable and overall enjoyable, but has some notable flaws.
8 – Great. All around solid show with minor flaws. Well worth watching.
9/10 – Excellent. The best shows of their genre. Highly recommended.