Best Cartridge for Less than $500


I have a SOTA Comet turntable with a Rega 300 tonearm and a Grado Gold cartridge. I would like to upgrade my cartridge and am looking for recommendations. My budget is $500. (The rest of my setup includes a Dynavector P75 phono-preamp and Aragon 8008BB power amp.)

Thanks.
adidio
My friend has Sota comet with RB 300 tonearm and Grado Gold prestige cartridge. He used the setup for a while, but he was not satisfied. After consulting with a seller of the table, he changed to Goldring Electra cartridge, a cheaper one. But he likes it better.

IMHO, Sumiko Blue point special MC cartrigde is one of the best at under $500.
Thanks for the recommendations. A dealer tried to sell me a Benz Micro Ace - thoughts on that cartridge for my setup?
First, the Dynavector mentioned is above $500.

Second, I wouldn't expect much of an improvement, if any, from the Benz Ace. It is somewhat lean and thin sounding which is not unusual for inexpensive moving coils.

If you insist on spending money, find a better moving magnet. At the Ace's price there are a handful of choices that sound better.