SB proxies to surf? Which addon? idiot proof

So on top of the ten elite private proxies i buy monthly from yourprivateproxy

I of course have access to the thousands from scrapebox. Is there a way I could use the best of these proxies to surf the internet with and have my proxy change as I clicked links etc?

Which firefox plugin is the easies to set up and use to do this?

If you throw out the name of the plugin could you explain why yout hink it`s the best?

No help?

proxy tool for FF
See thread here:
http://www.blackhatworld.com/blackhat-seo/proxies/242737-get-proxy-tool-plugin-firefox.html