Nick's Ever Growing Ranking of Anime

Obviously, very subjective... Duh:

———Tier 1——— 

Full Metal Alchemist: Brotherhood

Steins;Gate

Rurouni Kenshin
Your Name

One Punch Man

Mushishi

Pretty much everything Hayao Miyazaki averages out to here

A Silent Voice

Code Geass

Death Note
My Hero Academia
Made in Abyss

Attack on Titan (Season 1)

———Tier 2———
The Disasterous Life of Saiki K
Mob Psycho 100

Soul Eater 

Madoka Magica
Steins;Gate 0
Little Witch Academia
Angel Beats!
Parasyte
The Girl who Lept through Time
Seraph of the End

Erased

Rokka: Braves of the Six Flowers

Hunter x Hunter (2011)
Wolf Children
Violet Evergarden

Naruto *

Fate/Zero

Fate:Stay/Night Unlimited Blade Works

Bleach *

Re:Zero - Starting Life in a different world

———Tier 3——— 

Noragami
Patema Inverted
No Game No Life
Katanagatari
Overlord
Elfen Leid

Sword Art Online

Samurai Champloo (but the animation is awesome)

Darker Than Black (season 1)
Boruto
Boy and the Beast
Tokyo Ghoul

Gurren Lagann
Attack on Titan (Season 2+)
Saga of Tanya the Evil
Akira
Akame Ga Kill

The Seven Deadly Sins
Another

Future Diary
Re:life

———Tier Meh——— 
Charlotte
The Devil is a Part-Timer
The Melancholy of Haruhi Suzumiya
The Boy and the Beast
Tokyo Ghoul
Psycho Pass

Gate
Assassination Classroom
Summer Wars
Magi Series

Hamatora

Deadman Wonderland

The Irregular at Magic High

Blue Exorcist
Children of the Whales

Buso Renkin

———Tier "made me want to stop watching anime"——— 

Kabaneri of the Iron Fortress

Blast of Tempest

Black Bullet

Beatless
Neo Yokio

Code:Breaker

Trinity Seven


* Means the show starts at that position and overstays its welcome. Common occurrence for long running shows