Grado + Rega + Oracle = hum. I liked the Grado, minus the hum, but I liked my Grace F9 better.
My Grado is dead quiet just like any cartridge from my big collection of Grace. If you like F-9 then LC-OFC versions of the F14 and LEVEL II is the way to go.
So the reasons for a HOMC are several. One, MI on my system have hummed.
You know why?
Two, my tube pre-amp has a 47k Ohm RIAA phono stage, no go zone for LOMC’s.
Most LOMC are fine with 47k Ohm, all you need is much more gain