From good to exquisite is a long way, and many thousands of dollars.
If you have a good rig, you only need a "good" cartridge, an exquisite one would be a waste of money. I assume you know that a chain is no stronger than it's weakest link, meaning that an expensive cartridge will do you no good without "expensive" matching tone arm and turntable.
Last but not least is, how good is your hearing? When you take into account all these factors, an expensive cartridge might be a waste of money for you.