rauliruegas
is an absolute contradiction in terms. He revels in ancient cartridge designs and then he cow-tows to some pundit of shorter arms on the basis of technological theory. Just as measurements and specifications will not tell you how much enjoyment you will get from a piece of gear, reading white papers to decide which design is preferable is downright asinine. SAT/Gomez designs products for the 1% of the 1% and for systems that bear no resemblance to the relatively crude system of Rauliruegas.
The truth is that a 12" arm can render more joy and appreciation of home vinyl playback than a 9" otherwise identical arm. I have lived with three different sets of otherwise identical 9" and 12" arms. The only time I preferred the shorter arm was with the otherwise awful VPI unipivots. For Rauliruegas to try to suggest that a vintage table ought to have a 9" arm because SAT arms are 9" is just, for lack of a better word, "precious".