Cartridge recommendation for classical listening


I have a wonderful sounding Grado Reference Sonata cartridge which I love.  The only problem is, for many years, I have had a hum problem which I have investigated extensively but never found a solution for.  I know Grados can have this defect, and the extensively modified Rega P3 turntable I use can contribute to the problem
So,  I’m ready to give up and go with another brand of cartridge.
I listen almost exclusively to Classical music.  Can anyone suggest a cartridge under $1000 that sounds good for classical?
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I’ve listened to bits of  a great variety of records, and, so far, the cartridge has done a wonderful job on almost all, bringing out details I never heard before, and yet sounding very elegant and musical.  It is smooth throughout the tonal spectrum.
 I’ll report more as I listen to more repertoire.
You may indeed be right about the inductance and capacitance, but it was much easier to change cartridges.
Since you now have a different cartridge, but apparently also high output, the same rules apply. You might like it now, but if loaded properly it will get better. Here is an online calculator for discerning the loading values:
http://www.hagtech.com/loading.html