I've had a couple of issues with Google Apps and their support has been very helpful, getting a phone call from them and the issue solved in the same day. For example I got them to revert me from annual to the flexible plan by simply asking nicely and I even got them to operate settings that aren't normally available, like changing the primary domain. Nowadays I've been moving off Google Apps, but let me tell you, it's the support that I'll miss ;-)
Also back in the day when I was working on integrating with AdX, their reply was very slow, but they did reply and they did help us with our integration.
I do not have experience with GCE, but saying that you don't get support for any Google product is disingenuous.