What cartridge for Rega P5?


Hi folks,
I am getting a Rega P5 with its RB700 arm. I am not getting any Rega cartridges at this point. Any cartridge recommendations for the P5?. It could be MM or high output MC under $500. I have the Grado Reference Platinum and the Audio Technica AT150MLX in mind. Thanks.
audiolui
Thanks for the info, folks. Unfortunately I already have a Grado Reference Platinum on hand left over from previous TT. Yes, I heard that people say Grado hums on a Rega setup. I am going to try it anyway. If not working well, I will consider the Exact 2 and also the Benz Micro Gold. For the time being, I can only get MM or high output MC as my phono stage is not made for low output MC. Any other suggestions are welcome.
Thanks for the info, folks. Unfortunately I already have a Grado Reference Platinum on hand left over from previous TT. Yes, I heard that people say Grado hums on a Rega setup. I am going to try it anyway. If not working well, I will consider the Exact 2. For the time being, I can only get MM or high output MC as my phono stage is not made for low output MC. So Benz Micro Gold is out of the question for now. Any other suggestions are welcome.
I would stretch your budget a little and look into the Dynavector 20XL or 20XH depending on your phonostage. I had excellent results with my Rega P9.