Pathfinder 1E Best Pathfinder, non-AP module/adventure?

[HiLiphNY]

I'm looking for your favorite non-AP module for my group. Any standouts, particularly in the Pathfinder line.

 

[Crothian]

I really had fun with Entombed with the Pharaohs, Carnival of Tear, and The Pact Stone Pyramid.

 

[IronWolf]

I also enjoyed Realm of the Fellnight Queen and recently Steel_Wind reviewed The Harrowing which sounded pretty cool - though I have not played or run that one.

 

[Wicht]

I think you should try Coliseum Morpheuon, or Curse of the Golden Spear, but I may be biased.

 

[DonTadow]

I am declaring this the year of the Pathfinder Adventurer. I don't like to give 5 stars, but I've given 2 or 3 this year to adventures. By far, Zeitgeist: Isle is amazing. If you hate forcing combat down player's throats to reach some arbitrary XP number, and would rather have an adventure that had a good deal of everything I'd go with that one. My players say its been the best 3 sessions they've had in a year or two.

Citadel of Pain was my favorite traditional adventure this year. Very freeform

 

[TarionzCousin]

Citadel of Pain was my favorite traditional adventure this year. Very freeform

The PDF just came out in August. I can't tell from the shopping sites when the paperback version is due.

What makes it so fun?