Ian, you might try areas like Badger, CA, or some of Srila Narayana Maharaja's other, more saturated communities. I have heard they have a temple in Los Angeles as well. While I think you are a little miseducated as to the ontological position of ISKCON and GVS in the regards to disciples previously exposed to ISKCON, you'll find there are differences in groups among his following. Some do eliminate versions from Srila Prabhupada and are more educated in other Gaudiya Vaishnava works which Srila Prabhupada chose to not translate, and others attempt a "harmony" with Srila Prabhupada's presentation. I understand that you aren't looking for this "harmony" and are searching for a presentation of philosophy which is isolated from the teachings of Srila Prabhupada, or perhaps one that doesn't stress the angles approached by Srila Prabhupada. Good luck with your search. If I can help more let me know.