My first thread here.
My dealer urged me to try the matching Concept cartridges. I listened to both the MM and MC versions. I bought the MM version (I am an MM fan), and I was stunned by how good it after about 150-200 hours.
I am now running a Virtuoso, not because I was in any urge to upgrade, but because due to a silly accident I ruined the stock one and I happened to have a brand new virtuoso around. If it weren't for this I would still be very happy enjoying Concept Cartridge.