Hi. The term you want is "microtonality". I have used a lot of Componon S lenses in the past, and have tested regular old Componons in chrome barrel, but have no experience with the Apo Componon series, so can't comment on the difference.  But it's probably comparable to the distinction I've discovered between regular Rodagon enlarging lenses, which are quite good, and the Apo Rogagon-N series, where the subtle microtonality of the images is distinctly better, contrast too. But for big film sizes, like 8x10, I use Apo Nikkor lenses, which are even better in this respect, and appreciably better than ordinary El Nikkor enlarging lenses, which I use too.  There are good reasons why I keep quite a variety of enlarging lenses on hand. Sometimes I want a little less contrast in color printing certain images; or a given focal length of lens might be available in one series, and not another. Or I might have gotten certain excellent lenses free when a some commercial lab was demolished, so use them. I also keep a few funky enlarging lenses on hand when I want a funky look; but that's just for 35mm shapshot-style work. Fun topic.  ACROS film holds a lot of detail for its size, along with excellent edge effect which is best brought out using high-end enlarging lenses. This is important to me when shooting it in medium format 120 size. With large format sheet film, you can ignore grain issues to some extent and choose films for other reasons, like superior edge definition. But with the greater degree of enlargement needed with 120 film (I shoot both 6X7 and 6X9),  the special characteristics of ACROS allow very high quality prints if all the related printing variables are optimized too.