What cartridge for my SME 3012

I want to refurbish my SME 3012, and would like to know what would be the best cart?
I am not sure if it is the absolute best cartridge,but I have an ortofon spu royal on my SME3012 and from all I have read and personal experiance its a very good match.This combination is trouncing the nottingham anna 12" and koetsu black combo mounted on the other side of the table and I am saving for a superior cartridge to mount on the anna.
Try a Denon 103R, it is wonderfull with the 3012!!