Mitsui and TDK medical are easy in US

That's CDR for Master, TDK Audio Pro, Mitsui Medical and Mitsui Professional are easy in Japan

others will be hard to come by.



Ricoh Platinum, TDK Medical should be your target in the US, besides Mitsui Golds (you can get TEAC OEMed by Mitsui in US as well)