Not personally, but this article has stuck in my mind: http://gigaom.com/2013/03/15/by-the-numbers-how-google-compute-engine-stacks-up-to-amazon-ec2/ http://gi

Not personally, but this article has stuck in my mind: http://gigaom.com/2013/03/15/by-the-numbers-how-google-compute-engine-stacks-up-to-amazon-ec2/ http://gigaom.com/2013/03/15/by-the-numbers-how-google-compu... Note that this is a year-old article. It also doesn't address reliability; it focuses on common performance benchmarks. The article links to a GitHub repo with some performance benchmarks you can run yourself.