Hi Flyingred. I am currently using A Morch DP6 arm. At the moment I do not have any silicone put into it - this is on the recommendation of the importer, however I am tempted to put in a bit to lower the resonance, which I think is a bit high at about 13 or 14hz.
I have considered some other arms such as the Breuer/Brinkmann, a Graham, A Schroeder, or a Kuzma Airline. The only concern I have is that the Amazon was developed with the Moerch, and any change may be just audio jewellery with no real improvement, that could be had better elsewhere i.e a new phono stage