Is there usually a dramatic difference between $5k and $10k cartridges ?

@noromance : $10K to make an excellent phono cartridge? Really? Let’s assume an engine for a BMW automobile costs $10K to build. I can understand that. Plenty of parts that must be machined to tight tolerances and then skillfully assembled by a team of workers. A phono cartridge is a small device that weighs several grams. I fail to see where there is $10K worth of parts and labor.

Are you using a SUT?

If so which one. I think a $5,000 cart with a great SUT would be better than a $10,000 without a SUT. 

@martinl07d : The $16K Grado Epoch is a moving iron cartridge so no SUT needed.

Jason was kinda focused on dwette post. 
absolutely no SUT needed on MI 

@dwette Your comment is interesting; You have both stereo and mono high end. I am agonizing on upgrading my stereo cart OR add a similar value mono one. I have a lot of mono old rock an some jazz and vocals in mono. Would you upgrade from 5k to 10k stereo, or add a Miyajima Infinity cartridge (and second arm, etc.)? Thanks