I'm not sure how I'd rank it personally, but while I get the hype for 17-18's lineups, I think 19 is where the argument gets iffy for me. I love love love the Usher as an icon, loved the park entrance, loved the theme, loved the commercial, etc. However, while the event itself was great, the actual lineup isn't untouchable.
The Spawning and SAW were rough at best. I know Cleaver is beloved by many and my timing may have screwed things up for me, but I only got to experience opening night that year and it was incredibly underwhelming after loving the backstory, teases, queue video, etc. Chucky was fun, but not a masterpiece by any means. The trio and Silver Screams really held the lineup together.
The zones were a mixed bag too. Cirque du Freak was awful and you'd be pressed to find anyone who actually saw the movie at this point lol. Apocalypse was atrocious. Containment was incredibly short.
And that's a year that holds a special place for me seeing as it was my first year. I just think it may be held on a special pedestal for more general reasons than the actual lineup :shrug: