Fast proxies don't make much difference if you are going to hop
through more than 20 routers. Asia is pretty unlucky as most
servers are based in Europe or US, so they typically hop through
quite a lot of routers which can slow down quite a bit.
My usual recommendation is to use ISP's proxy as they are quite
fast and stable. Public proxies, like warez, appear and disappear
very fast, so you need to keep up with them. Some don't work at
all...