Found this really good site analyser that focuses on onsite issues really well, especially useful post penguin I guess. Attached a partial screenshot of the report showing the areas it covers. Give it a go! Didn't find any of my links though, so don't think it compares in that department. http://sitebeam.net/ - Sign up for the free trial.
Just been playing around with it a bit more, and they generate presentations for you with all the data and add in generic SEO pitch type stuff, perfect for offliners.
