Petesm,
as the MC-stage of the C200 includes an Ortofon-built step-up transformer with an impedance of 10 ohms, you will be fine with any traditional Ortofon-cartridge with an internal resistance of 3-10 ohms. I myself use Ortofons with my C200, with fine results. If the Sumikos offer low internal resistance values as well, that might be an alternative. You do not have to limit yourself to MCs, however. The MM-section is first class, too. I tried a Music Maker III, with excellent results.
as the MC-stage of the C200 includes an Ortofon-built step-up transformer with an impedance of 10 ohms, you will be fine with any traditional Ortofon-cartridge with an internal resistance of 3-10 ohms. I myself use Ortofons with my C200, with fine results. If the Sumikos offer low internal resistance values as well, that might be an alternative. You do not have to limit yourself to MCs, however. The MM-section is first class, too. I tried a Music Maker III, with excellent results.