New Cartridge

I have a Rega RP 3 turntable with a Exact cartridge. Thinking of replacing it my budget is $600. What recommendations can you give me. I have the Rega phono preamp and speed control. My pre amp is a Rogue Metis and have a Carver 1.0t MK 2 Opt 2 amp. I have Source Technology 7211 speakers with 2 Source Technology sub’s. I listen to classic Rock and Blues. Thank for any input.