What kind of music do you listen to? If you listen to classical or jazz, my first suggestion would be to add a mono cart. There are lots of great recordings that are only available in mono and playing them back with a mono cart really makes a difference.
Or if you want a stereo cartridge, something with a bit more romance could be a good complement: Miyajima, Koetsu, or SPU.
Or if you want a stereo cartridge, something with a bit more romance could be a good complement: Miyajima, Koetsu, or SPU.