Edgeware, In his original Stereophile review, none other than J Gordon Holt rated the MC2000 the best he had yet heard, while he also cited its problems (high cost and minuscule output). So I’d say the MC2000 put Ortofon on the high end map. There was no one more influential back then than Holt, except maybe HP. But Holt was the elder statesman, having founded S'phile way before HP founded TAS.
Anyway, this thread got me thinking about my MC7500, which has been sitting on a shelf for more than a year (or maybe more than a few years), not in use. Today I mounted it in my Kenwood L07D, driving Raul's 3160 Phonolinepreamp into modified Atma-sphere amplifiers driving modified Sound Lab 845PXs. After about an hour of warm up, the MC7500 is very very good. Better than I remembered it. More "musical" and better in low bass definition and extension, compared to the AT ART7 it displaced. I plan to listen to it for an extended period. I am still not sure if I would rate it ahead of my MC2000. I was surprised to read that the recommended VTF is 2.2 to 2.7g, as for the MC2000. I wonder why two such high compliance cartridges require relatively high VTF. Perhaps due to stylus shape? Comments appreciated.