A high percentage of my personal color photos from the 1980's were shot on either Kodachrome 64, or Kodachrome 64 Professional, or Ektachrome 100, or Ektachrome 100 Professional. All good color slide films. I liked the look of the 64-speed Kodachromes. The "professional" film stocks were released AT their point of perfect color perfection, and were designed to be refrigerated, then shot, then processed. The amateur films often were shipped "green", and had a slightly-changed color rendering after around 13 months, as I recall reading in Modern Photography magazine. The idea was that, on "amateur" color slide film, that the best color rendering would come after just over a year from the date of manufacturing. I think that, despite the minor differences between "green", "maturing", and "optimal" color on amateur-oriented color slide film, that Kodachrome II, or K-25, or K-64, have always been very amazing films; not color-accurate, but color-amazing!
Kodachrome has amazing dark-storage life. Kodachromes that have been kept in dark storage look AWESOME, even 50 years or more after they were shot and processed. I have hundreds and hundreds of my grandfather's early 1950's to mid-1970's Kodachromes. Amazing colors!