Hi Jackie - if you are looking to evaluate the product from the project perspective, wouldn't this be more about metrics that relate to its usage and distribution? Metrics relating to quality could simply be that x respondents 'rated the object as good or excellent'
If however you are trying to find out more about the value that users place on the content, then I'd favour a simple free text commenting and rating system. I've always thought that surveys have a habit of channeling responses rather than encourgaing free thought.
Just a thought...