Thank you, shakti. Oh my! Well this is all a lot more complicated and tweaky than I was anticipating!
I thought (mistakenly, I now read) there was widespread agreement that a high effective mass arm -- whether Ikeda 407 or an FR -- was the best carrier generally for low compliance Koetsus, and that that is all you need to make a Koetsu "sing."
I like a natural, slightly rich mid-bass to lower midrange, slightly warm-ish balance in a tonearm/cartridge combination. (Think Benz Micro Ruby 2, Koetsu Rosewood Signature Platinum, Benz LP S-MR, ZYX UNIverse Premium; I do not care for even Lyra Atlas.)
I, personally, would not want a resonant FR arm to tip upward the tonal balance of a Koetsu cartridge.
shakti, if I do not want to mess with headshells, rubber strips, rubber rings and bands, etc., what is your suggestion for a turn-key tonearm for a Koetsu?
What do you think of the SME 3012R for a stone body Koetsu?
One of these may be the answer. Very interesting and eminently affordable. To be available mid- October.