New cartridge for Pro-Ject RPM4?

[StaFri]

Hi,
I have a 25+ years old Pro-Ject RPM 4 (sort of predecessor to RPM5, methinks) and would like to replace the original OEM cartridge (Ortofon something?). I have never been much of a techie and haven't got a clue about compliance etc. My phono stage is in a Quad 99 pre. For financial reasons I would go for a MM, and not invest in something that's out of the spinner's league; somewhere around the £200 mark (or below)? Play mostly rock and some jazz.
Any suggestions?
Staffan Fritz

 

[daytona600]

Replace/upgrade the ortofon Something stylus or fit a Project MM

Accessories – Pro-Ject Audio Systems

www.project-audio.com

 

[Al ears]

Replace/upgrade the ortofon Something stylus or fit a Project MM

Accessories – Pro-Ject Audio Systems

www.project-audio.com

The Project cartridges are basically Ortofons.
Not sure which Ortofon it came with originally but easiest route is an Ortofon 2M Blue.