Demagnatizing a ZYX Cartridge

My Benz Aethetix demag suggests trying multiple passes and I have in the past with a Glider and some Grado cartridges without harm. However, after reading this thread I'm not so sure this device is what I should continue to use in the future. I now have a Benz M2 which I just bought so I want to make sure it lasts a while and stays at peak performance levels. Any suggestions out there for the best demag/degausser tools to use?

I'll also be at RAMF this weekend so I hope to learn more about this topic and possible solutions there in addition to what I can learn here.

For what it is worth I was at the RAMF and attended a seminar by Wally Malewicz. He recommended passive demagnetizing tools such as Cardas, but was against active demagnetizing tools (I specifically asked him about the Benz Aethetix). Wally does not believe any good comes from the active process and that excessive use will damage the cartridge (he provided his scientific reasoning for this via a diagram he drew up - unfortunately I am not technical enough to repeat it for you here). He also shared a DIY process which if you contact him I'm sure he would be willing to share.