Dear Guys,
I am brand new to TOR and I feel like multiple TORs should be considered. The multiple tors I mentioned here are not only multiple instances, but also using different proxy ports for each, like what has been done here http://www.howtoforge.com/ultimate-security-proxy-with-tor)
There is stream isolation, i.e. you can add multiple SocksPort to torrc. Is this what you want?