You're bound to find that the East Coast proxies have lower latency and less hops than the West Coast proxies. I am currently in London and am using the DCA proxy due to the lowest ping times, which are about 85 ms. BOS is a bit higher at 95 ms. I tried just about all of them for fun and picked the lowest. I see from the threads that some are more stable than others, but I can only personally say that DCA has been very good for me.
I used this method after see the following link on the BroadVoice site:
http://www.broadvoice.com/support_in...byod_xten.html.
The proxies, as far as I can tell, are:
proxy.bos.broadvoice.com
proxy.chi.broadvoice.com
proxy.dca.broadvoice.com
proxy.lax.broadvoice.com
proxy.mia.broadvoice.com
Others may exists, but these are the ones I know about. You'll note that the link I provided only mentions dca, lax, and mia.
Does this help?