10 - 9: Loved it, will definitely recommend this!
8 - 7: Has a few flaws, will still recommend however.
6 - 5: Average, may recommend, may not
4 - 3: Rather bad, most likely will not recommend.
2 - 1: Horrible, definitely will not recommend.
There are exceptions and these are:
A) A standalone OVA
B) A music video / set of music videos
C) A series that does not exceed 15 minutes per episode.
I also plan to watch each relation to an anime if I can find it (Spinoff, Specials, OVAs etc) - but if I can't find it, I do apologise!