gzip vs http speed on industrial server

Im writing a proxy app that is going to be deployed on Amazon EC2. Which of these options wo开发者_如何学Pythonuld be faster, and generally good practice for my application?

Request compressed > uncompress > proxify / modify html > compress > send compressed

or

Request uncompressed > proxify / modify html > send uncompressed

I know compressed is generally better, but this is different because we have to decompress AND recompress AND Amazon EC2 has blazing fast internet.

The compression is more of an optimization for the client than for the server so Amazon's speed is less relevant, that said, the only downside of compression would be if it takes much more time, but I don't that would be an issue.