The Pearl set up with the 836's should be a good sounding system.

The Grado is sort of on the warm or colored side of the cart spectrum. You might look at the Dynavector 10x5 which is a high output MC that will play through a MM phono stage. It's more toward neutral and really popular at it's price point. Ortofon has a broad line of carts both MM & MC, they are typically a very lively sound. Benz will move you toward neutral without quite reaching it if you wanted to move in steps that direction. How happy are you with the Grado? If satisfied may be no reason to change unless just curious. Some of the Clearaudio MM carts are good I'm just not heard much feedback on how they work with various brands of tables. Then there's carts like the Denon, 103 I believe, that is a stone classic, not the most accurate but people love the way it sounds. It's pretty cheap to comparatively. There's a slew of other things out there too I'm not yet familiar with.