Kodachrome replacement? I am thinking you are referring to Kodachrome 200? I had used a roll or two and thought it was good, it is my brother who has over 25,000 Kodachrome slides who had a bit to say about Kodachrome 200, he said it had a bit of a pinkish cast to it, I thought it looked fine, my brother's favorite was the ultra slow 25 ASA Kodachrome, one thing for certain my brother would not even consider the thought of using Agfachrome or Ektachrome, he uses Velvia now.
I remember in 1976 when Kodak first introduced the E-6 Ektachrome 64 Professional film, This was the first E-6 Ektachrome, it looked and still looks absolutely fabulous today, has not faded or changed one bit!
I recently stockpiled 30 rolls of Ektachrome 100VS, this is the last Ektachrome and the best, no other E-6 film will ever match it.
You really should not compare the 200 speed Agfa slide with 200 speed Kodachrome per se, the Agfachrome has much better shadow detail and exposure latitude than Kodachrome, Why? You look at my brother's last Kodachrome 64 slides shot in the same place compared to my Agfachrome slides and the Kodachrome is way higher contrast with less shadow detail, we are both very active Railroad and train photographers and often shoot side by side so that is why I can comment rather accurately about how Kodachrome and Agfachrome look in a side by side comparison, he shoots with Nikons, I shoot with Canons, Voigtlander, Zeiss and Leica, My brother now has to adjust to "high speed" 100 ASA film, honestly do not know how he put up with 25 ASA film for so many years, I have to have a minimum of 100, 200 is even better! LOL!
Ive sent you a PM