EMT JSD 5 or JSD 6?

I used a JSD5 for several years, and Ninetynine's description of the JSD6 pretty much is what I heard through the JSD5, but I have not compared the two. Not the most resolving cartridge, maybe on the warm side of neutral, but among the best for playing music. My view is that a lot of cartridges these days tend to sound closer to (very good) digital in many respects, but the EMT cartridge sounds like analog at its best. I still own it, in reserve for my Air Tight that replaced it.

I would have to imagine that somewhere on the internet there is something that would explain the theoretical differences between the two types of styli.

By the way, EMT also has a small and (at least at the time) relatively inexpensive SUT made specifically for the JDS cartridges. When I had a Lamm LP 2 Deluxe this step-up was a slight but noticeable improvement over the Lamm's built-in step up transformer for its MC stage (my current phono stage is only set up for MC, so I sold the SUT). If you get the cartridge I'd suggest considering the SUT, depending on your phono stage. It was that good.