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?
128x128rvpiano
Len,

I appreciate your recommendations.  I know you listen to a lot of classical music.
Since I’m not at all good at installing cartridges, I’ll have to have the dealer I buy it from install it.
 I’m staying home.  I can’t keep my wife from going out, however.

Richard
Richard , I have never seen a cartridge built as well as the Exact-2Output 6.8-7.2 Google how Rega builds then IN England .

I used to be very good at it . Used to.
Dear @rvpiano : I agree with shubert on the Nagaoka and inside your budget you can 't go wrong with the Nagaoka MP-500 and it's a hard cartridge to beats and a true chalange for any other today cartridge:

http://v2.stereotimes.com/post/nagaoka-mp500-phono-cartridge/

Regards and enjoy the MUSIC NOT DISTORTIONS,
R.