List of my personal favorite anime series out of shows I've watched. Rank #1 being the most favorite. Some ranks are ties. Updated Feb 2019:
The iDOLM@STER (original)
Danna ga Nani wo Itteiru ka Wakaranai Ken
Fullmetal Alchemist: Brotherhood
Maria-sama ga Miteru
Nagi no Asukara
White Album 2
Rokujouma no Shinryakusha
Chuunibyo demo Koi ga Shitai
Inugami-san to Nekoyama-san
Non Non Biyori
Ao Haru Ride
My favorite anime genres (in no particular order):
Slice of Life
Not really a genre, but: Shows that are exceptionally well-written (in terms of plot and characters), regardless of genre
Also not really a genre, but: Relaxing
My all time best girls list:
My all-time best girls list
Listed approximately in order of favorite girls:
Nitta Minami (iDOLM@STER Cinderella Girls)
Satou Sei (Maria-sama Ga Miteru)
Shijou Takane (The iDOLM@STER)
Futami Ami and Futami Mami (The iDOLM@STER)
Ganaha Hibiki (The iDOLM@STER)
Koizumi Risa (Lovely Complex)
Kagayama Kaede (Non Non Biyori)
Kisaragi Chihaya (The iDOLM@STER)
Reki (Haibane Renmei)
Shows I've seen where (in my opinion) all or nearly all of the girls are the best girl (listed roughly in order of favorite girls):
Rokujouma no Shinryakusha
Maria-sama Ga Miteru
Akuma no Riddle
Inugami-san to Nekoyama-san
My anime rating system (for official MAL ratings):
(Feb 13, 2019) To add more to this giant wall of text, I should say that my anime list scores are kind of a mess right now and I want to change my rating system to a different system, but it would be so convoluted that I just haven't cared enough to deal with it yet. So I just put "watched" and don't rate them lol. Maybe eventually I'll organize my scores a little better but as of now a lot of shows are currently unscored. My list above, of my "favorite" animes will give a pretty good idea of my tastes, I hope.
("old" Jan 2019) tl;dr: For official MAL ratings on my anime list, I score shows based on how well-made I think they are in various categories. I try not to allow my personal tastes to affect my rating of a show, because I am trying to rate the quality of the show from a standpoint of how "good" a show is, regardless of how much it matches my personal taste. This was sparked by one of those frequent discussions in the forums where people complain about how other people rate shows. But it does open up an interesting discussion about what a person factors in when they judge or score a show. I haven't yet fully decided how I will rate shows (more info below).
Update Jan 3, 2019:
I've realized that my current rating system may not be appropriate for all shows. So I may change it up. For example, including "plot" as a major category in a comedy show might not be a very appropriate way to rate the show because that might not be what the show was going for. The show could still be very well-made and high-quality. Maybe I'll use a weighted system. Like if it's a comedy show like Azumanga Daioh, I'll base a higher fraction of the score on the humor, but if it's a really serious show like Shinsekai Yori, I'll put more weight on the depth of the characters and the quality of the plot.
As of May 22, 2016, I have started re-rating the animes I've watched. Shows that have been re-rated have a breakdown of the rating in the "Tags" section. If a show doesn't have a breakdown of all the separate categories in the tags, I haven't re-rated it yet.
If you're wondering what my preferences are you can also check out the "personal enjoyment" rating I put in the tags for each show, (including many of the shows that don't have an "official" rating yet). (I think the "tags" are only viewable in the desktop version of the website). (Update Jan 3 2019: the list I mentioned at the top of this section might be a better way to handle this personal preference category).
My old (pre-2016) ratings reflect an unclear combination of (my opinion of) the quality of the show combined with how much I personally enjoyed the show.
My new (2016) rating system is described below:
My (new) ratings for the animes I watch are based equally on the following criteria:
1) Well-written plot/storyline
2) Well-written characters, regardless of whether they're likable. Good character development
3) Well-written relationships between the characters
4) How elaborate the show is. Details of the systems and settings and background stories of the show
5) Music: the quality of the music itself, as well as how well the music is used and the effect the music has on the scenes and on the show
I then take the total score and divide it by the number of categories I used, giving me a score out of 10, which I round if necessary. This is the rating I give the show.
If I don't remember an element of the show, I just don't include it in the rating. For instance, if I just completely forget what the music was like, I just don't include it in the rating.
My personal enjoyment rating does not affect my official rating of the show.
I don't rate: quality of visual art, quality of animation, and voice acting.
Why I don't rate visual art: due to my lack of experience and knowledge on the subject of drawing and art, I do not have confidence in my ability to tell good art from great art, or to tell okay art from good art, or to tell bad art from okay art. (Update Jan 3, 2019: I might start rating art now because I feel like I have a better idea of it.)
I haven't thought much about "quality of animation" because I know even less about that subject. Plus, I think if I want to be fair in my rating of a show's visual art and animation, I also have to take into account the year the anime was made and the "standard" quality of the anime art and animations of that particular time. In the future, I might be able to accurately judge all this, but right now (2016) I just don't think I have the knowledge to accurately assess such things. (2019: I still don't quite, but I am much closer.)
I don't rate Japanese voice acting because I don't speak Japanese. I think I am starting to get a feel for the difference between someone who does a great job at emoting certain feelings through their voice acting, versus someone who doesn't. But I don't know if I will truly be a good judge of such things (in Japanese) unless I become somewhat fluent in Japanese.
(Edit: June 2017: Perhaps I should combine criteria 2 and 3 (characters and relationships) into one category. I'm not sure yet.)
Update: just for clarification, I try to make my ratings as accurate to my observations as possible, but since it is indeed difficult to remember every aspect of a show, I just rate each category as accurately as I can/as well as I can remember. And if I re-watch it and find something that I forgot, maybe I'll change the rating of the show. So I'm not super uptight about my ratings, but I do try to rate them as well as I can/as accurately as I can. Just for clarification.
And here's how the numbers work for me for each category:
10 is perfect in that category. How far away from 10 is: how far away from exactly what I would have wanted/perfect
0 is the worst possible in that category.
A 5 could mean: 50% is exactly what I wanted/perfect, 50% is the worst possible.
TL;DR: The sections of emboldened text above shows the categories I judge a show on.