Yes, I have listened to them all. I think the Cosmos IV is the best overall, the Fat Bob is the most dynamic and the Delphi V is the most musical, if that helps. Those 3 are all very close.
Then it drops off to the delphi III, Alexandria and Sota Star III. Then to Empire, Sony, Project. In each group, the cartridge would be the deciding factor.
I use SME 309 and 345 on the Cosmos and Oracle, Audiomods IV on the Fat Bob.