I was a long time user of the Dyn-B until recently when I switched to the Full Circle, then ran as fast as I could to the Ehrlund. I get better results with the Ehrlund by far, but the putty has me wondering... I know people say that putty is putty, but the stuff that came with the Dyn-B felt more substantial and was far less prone to 'tearing out' when put under pressure than the Faber-Castell putty that comes with the EAP. If the temperature gets high enough any putty will tear out or melt even, but at those temperatures one shouldn't be operating an upright bass IMO... So is there anyone out there who has both and might be willing to experiment with different putty and the EAP? I would but I no longer have the Schertler stuff.