upgrade from my BENZ ACE low output MC cartridge

I have more questions. What is the difference between new S series and the old one? Any opinions on low and medium output versions?
Thanks!
Vlad

I bought a Shelter 90X used once, as a backup for my XV-1s. I don't know if the Shelter was worned out but I never got the best out of it. Even if I didn't got this cartridge right I could tell it had very nice dynamics, excellent tonal balance and a powerfull bass. I would not blame Shelter for the sibilants I never got rid of. I might have recieved a worn out cartridge in the first place.

So, in my opinion the Shelters are excellent. But I believe it's difficult to tell which is the better choice when I don't know the system.

Audiomirror...If you're question is regarding the "S" on the new Benz's, I understand that it pertains to the frame of the cartridge. The S class has a brass frame which reduces the resonances of the cartridge due to its more stable platform. The S series is therefore heavier than the original. I never A,B'd them, but I understand that the S series is slightly cleaner. I have an Ebony LP original that I'm very happy with. When the stylus becomes worn, I will take advantage of the Benz exchange program for an "S".