My list (all time):
___________________________________ I'm sure that their subs are top notch:
___________________________________ Doki - my favourite group nowadays. Static-Subs &/or Eclipse Productions (SS-Eclipse) - probably my fav group (or rahter collaboration) all time Menclave AquaStar Tomodachi LunarAnime Hitoku
_________________________ In most cases great subs:
ANE (Afternoon Naps Empire) AnimeYoshi Mori Chihiro ReDone-Subs Kantai Frostii (even with some liberties, still good subs) Oyatsu anime.fin C1Anime
_____________________________ Rather OK/seasonal watching:
_____________________________ Crunchyroll - really depends on series. For example Gabriel Dropuot from this season is a disaster, but Demi-chan wa Kataritai is translated really nice. AnimeNetwork - as above, they have trashy translations, but sometimes there is something like Urara Meirochou from this season, which is translated perfectly (even with few TL notes). UTW - I like mostly their past works.
__________________________________________________ Avoid by all cost (trolling/memes/high localization/etc):
MY RATING SYSTEM (my ratings are mainly based on rewatch probability + feelings/emotions + art + soundtrack): 10 - I'm sure, that I will rewatch it in (near) future, masterpiece. 9 - series was very good, most likely I rewatch in (further) future 8 - very nice plot, I may come back to this in the future 7 - I was not bored, but it was typical 'one shoot' 6 - I know that I will never come back to this title (6 probably for good OST / ART / Fanservice). 5-3 - I would never recommend this series to anyone (lower rating = greater shit). 2-1 - Epic fail, shittest shit.