I have played around with foil for some time and always loved the sound of it. It seems how thin the foil is helps to get a better body of the sound. The sound is better "time aligned" supposedly and it really sounds like it. I tried WBT connectors also against the Insound house mix of thin metal and maple wood and difference is notable.
Shouldnt your SUT be placed inside the Phono stage directly? that is a real advantage.