This is based off the Steven Wilson mixes.
1.) Red
A perfect album from start to finish. I call this the definitive prog rock album of all time. The album also contains my favorite King Crimson song "Starless". The song is featured on the movie "Mandy" starring Nicolas Cage. The haunting song is the movie's opener. From the 2 concerts of King Crimson I attended, they would turn the lights red for it. IMO, this is King Crimson's heaviest album.
2.) In The Court Of The Crimson King
Considered to be the first prog rock albums released. It's debatable if it's the first but no one can deny the originality of it. This was my first King Crimson album I purchased and also the first album I bought on Vinyl. The song "Moonchild" appears in the movie "Buffalo '66". A very unique scene where Christina Ricci tap dances to it at a bowling alley.
3.) Lizard
Of all the Steven Wilson re-mixes, this is by far the best. It opens a new view into how much depth is hidden in it. The song "Prince Rupert Awakes" is Beatles-esque. It's the song I usually test my speaker system with. It's also the first song I present someone who has never heard of King Crimson. IMO, this album is King Crimson's most complex. Unfortunately, it commonly gets tossed aside but I would recommend to give this album a listen to in surround sound to enjoy its beauty. I'm looking forward to hearing this in Dolby Atmos of all the King Crimson albums.
4.) Larks' Tongues In Aspic
What can you say about an album with an amazing opener and an equal closer? Larks' Tongues In Aspic Part 2 is covered by Dream Theater on the special edition of "Black Clouds & Silver Linings". One of the best Vinyl to watch spin on your record player. The image of the sun and moon rotating is a creative idea.
5.) THRAK
Drums, drums, drums. This album immediately caught my attention. It's also so diverse in its song line up. One minute you are listening to an assault on the senses and then the next song is relaxing. It has one of the most accessible songs "Dinosaur". This song also sounds nothing like their other songs on the album or in their entire catalog.
The first time I heard King Crimson was from the movie "Children of Men". I wouldn't rediscover King Crimson until hearing Ozzy Osbourne's cover of "21st Century Schizoid Man" on the album "Under Cover".