Hi: I currently own a Beomaster 8000, Beocord 9000, Beogram 8002, and MS150 speakers. Most of my listening is to piano recordings, chamber music, lieder, orchestral--in that order. I am considering purchasing a brand new B&O cartridge. I have four optons that are currently available (at different prices, of course)--new B&O cartridges in sealed boxes, ie new old stock. They are the MMC3, MMC2, and the MMC1; there are also the Soundsmith equivalents. Any advice about the relative merits of the cartridges and their value vs. cost would be greatly appreciated. Donald