For reasons that escape me, the Ebony line of cartridges does not get the respect it deserves, and they get overlooked by audiophiles in serach of a world-class cartidge.
I mention this for the benefit of those who might be in a similar situation to Stringreen and are pondering a switch. If you do, you may be changing the presentation but not necessarily making an improvement.
Perhaps the LP has been around too long to catch the eye of audiophiles? Perhaps the slightly (and I emphasize slightly) slow, bloated sound of the lesser wood-bodied cartridges in the line causes people to overlook this fine cartridge?
With the LP, they got it right ... really right - not throwing out the wonderful things that all Benzes do in the nuance and delicacy department in the process.
I've not heard the "S" class version, but would feel confident in taking the advice of those who have done the upgrade. Their sensibilities are finely tuned to the virtues of the original LP, and I would trust them that Benz didn't screw up a good thing.
Cheers,
Thom @ Galibier