Need opinions on cartrige for Audio Research ph3

I own a audio research ph3, it's SE version and as far as I concern ph3 doesn't like low output cartriges less than 0.3mV. I had to open the volume control all way to 12 to had sound. I tried Benz Micro Glider Low output version and I had good results but still have same gain issues to deal with.
Ph3 is a very good unit unless if you need plenty of gain, the units gain is 54dB. Does anyone used with Clearaudio Aurum Beta S or Grado's or any MC opinions less than $500?
What else is in your system??? This question cannot be answered out of context.