Been a fan of anime for roughly about 10 years and the first one I watched was pretty much the dubbed version of Inuyasha. What I usually enjoy the most these days is stories accompanied with a gritty dark atmosphere and tone preferably. Although that's what I'm typically into I can appreciate anything provided that it has a solid plot or characters I care about. I can be a fan of the occasional great comedy too, it all really depends. Genres I'm just not all that into are ecchi,harem,romance(usually) and slice of life. Favourite genres I love are Seinen, Sci-fi, Action, Shounen and Horror.
Generally how I go about ratings:
3.5 stars:Solid entertainment and reccommendable
4.5 stars:Brilliant, very few flaws if any
Basically anything below 3 stars to me fall under the mediocre or god awful category.
Disclaimer: All my ratings are my own subjective interpretation so take it with a grain of salt