MP150 or MP200

Grace made disco cartridges with Beryllyum cantilever and it's a huge advantage over aluminum, but for higher price! Strange that they would use beryllyium as it is a very brittle element for disco use .

@chakster I got that info personally from DJ Harvey via Francois K (who was in the booth every week)... and here is Larry himself talking about Grace carts:

“I’m going to get two more turntables so that as the night goes on, I can upgrade the sound. So I use cheap cartridges in the beginning and upgrade – I have $150 Grace cartridges which I’m really into but you can’t backcue with them. At five AM you’d say ‘what is that?’ because a record should sound as good as a tape.”

https://www.djtimspins.com/larry-levan-interview/?cn-reloaded=1

For the record... Grace Disco stylus has nothing to do with DJs. It was marketed to audiophiles. It is a high quality nude diamond. I assume the name comes from the fact that it is spherical. The F9D, which I own, has a recommended tracking force of 1.2 g, the same as other Grace F9 models (F9P has a significantly higher VTF because it was meant to be used in heavy professional arms, i.e. radio stations). the F9D is a very good sounding cartridge.

I'd try and snag a Shure m97xe, if you can find one. It's a great mm cartridge with styling cues from the shure v15, with the drop down stabilizer brush. To me it's a great sounding mm cartridge.