I have the 901 on SME V on Michell Orbe SE. The bass is extended and tight. I would suspect that Patrickamory is correct that Shelter 901/Graham 2.2 might not be a good match.
As to whether 90X is a US-only product. I am not sure if that is true. I have a recent issue of the Chinese language version of Japan's leading audio magazine. There's an ad by Shelter's Hong Kong importer showing all three cartridges (90X, 901, and 501 MkII). I've also seen 90X on the homepage of an European dealer as well.
FrankC
As to whether 90X is a US-only product. I am not sure if that is true. I have a recent issue of the Chinese language version of Japan's leading audio magazine. There's an ad by Shelter's Hong Kong importer showing all three cartridges (90X, 901, and 501 MkII). I've also seen 90X on the homepage of an European dealer as well.
FrankC