Well if you liked Durarara then I'm assuming you've also seen Baccano. If not, definitely watch that. Same creator as Durarara and just as chaotic.
Some of my other Favorites include:
- Eighty Six (23 eps, but not finished yet)
- The Disastrous Life of Saiki K (50 eps)
- Samurai Champloo (26 eps)
- 91 Days (12 eps)
- Black Butler (43 eps)
- So I'm a Spider, So What? (24 eps, but not finished yet)
- Dr Stone (28 eps, but ongoing)
- Haikyu!! (85 eps)
- Jujutsu Kaisen (24 eps, but not finished yet)
- Demon Slayer (45 eps, but not finished yet)
- Goblin Slayer (13 eps, but not finished yet)
- That Time I got Reincarnated as a Slime (48 eps, but not finished yet)
- Bungo Stray Dogs (50 eps, but not finished yet)
- Angel Beats (13 eps)
- Code Geass (50 eps)
- One Punch Man (24 eps, but not finished yet)
- Mob Psycho 100 (37 eps)
- Darker Than Black (27 eps)
- Steins Gate (26 eps)
- Erased (12 eps)
- Tokyo Revengers (37, but not finished yet)
- Full Metal Panic (37 eps)
- Gunslinger Girl (26 eps)
- Ouran High School Host Club (26 eps)