Pretty much everything is a work in progress x.x
Also as a note, almost every anime listed should be considered to have one score lower than what is listed until further notice.
1st anime: Pokemon - [~1998?]
1st anime (that wasn't Pokemon/Naruto/etc.): Fate/Stay Night (2006 version) [~Feb. 2011]
100th anime: Fate Zero [~June 2012]
200th anime: Monogatari Series: Second Season [Dec. 29 2013]
100 days watched: Durarara! (rewatched) [Aug. 11 2015]
300th anime: Gate: Jieitai Kanochi nite, Kaku Tatakaeri [Nov. 7 2015]
How I Rate Anime/Manga
10: Partially personal preference, but was spectacular and near perfect.
9: Had a couple things that could have been improved, but other than that it was amazing.
8: Wonderful. Not many complaints, but was lacking somewhere.
7: Enjoyable. Never questioned if I should drop it.
6: Average, but managed to be a little interesting due to some aspect of uniqueness.
5: Average and wasn't very interesting.
4: Not very interesting.
3: I heavily contemplated dropping.
2: Only finished this to get my days watched/read increased.
1: I should have dropped. Mistakes were made.
Should you watch/read?
1-4: Definitely not.
5: Only if you don't have anything better.
6: Sure. Why not?
7-8: Yes. I highly recommend it.
9: Not sure why you haven't watched or read it already.
10: Like I said above, these are partially personal preference, but nonetheless, I extremely recommend it.