Cartridges for rear of stage orchestral resolution

Just out of curiosity, what are your system components and how are your speakers set up? getting the resolution you are looking for may require more than a cartridge upgrade.

Case in point - some electronics will blur that detail, as will improper speaker placement.

Your equipment should do depth, so I would tend to look at room acoustics. What's between the speakers? How far out from the wall are the speakers placed? Do you use any room treatments?

I really don't think the Benz is the issue, that cart should resolve the back of the hall without problems.