I am now in the process of planning the deployment of a SharePoint solution into a production environment.
I have read about some tools that promise an easy way to automate this process, but nothing that seems to fit my scenario.

In the testing phase I have used SharePoint Designer to copy site content between the different development and testing servers, but this process is manual and it seems a bit unnecessary.

The site is made up of SharePoint web part pages with custom web parts, and a lot of Reporting Services report definitions.

So, is there any good advice out there in this vast land of geeks on how to most efficiently create and deploy a SharePoint site for a multiple deployment scenario?

Edit
Just to clarify. I need to deploy several "SharePoint Sites" into an existing site collection. Since SharePoint likes to have its sites in the SharePoint content database, just putting the files into IIS is not an option at this time.