EMT JSD 5 or JSD 6?

I would like to choose between these two cartridges as well an look forward to your responses. Thank you for the post!

I had a Kleos an now a JSD6. Dr. Feickert told me to choose the JSD6 and not the 5 and i am so happy with this cartridge. It is darker in the high`s but plays every vinyl without beeing intrusive. The stage is not so wide as with the Lyra but the EMT for me is a much better allrounder. Until today i had no single vinyl which was a problem for the JSD. No problems with loud female sibilants, which brought the sweat to my brow with the Kleos.

On 5-10% of my vinyls the Kleos was better than the EMT, but i want to hear all of them.

Acoustic Sounds lists only the Tsd-15, and TWO choices of JSD-6. One is Gold, and runs about $1K more. They do NOT list the JSD-5 at all.

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.

Yes absolute correct!
2 Weeks ago i tested a VdH on the tonearm where the EMT runs. (Reed 3P) It is a little bit more on the bright side but it sounds rough and grainy compared to the EMT. I think this has to do with the sharp diamond.

EMT tells me, if you have more new vinyl`s go for the JSD5. If you have more older, the JSD6.