Transparent proxy = No privacy. It passes the original information and tells the destination server that the requests is coming from a proxy. Anonymous proxy = It hides your IP address but uses a common IP for number of users so there are positive as well as negative side of it. Elite proxy = Highly anonymous. Provides best security since it make your system look like a non-proxied server.
Bro I got what u said about Transparent and Elite Proxy but Anonymous Proxy is still unclear to me. Pls reply soon