Dynamic Data Entity versus Windows Forms Application

I am starting a new project and now I'm seeing this Dynamic Data Entity application.

argh. I want to provide my client with the best and latest technology, but I also don't want to take forever doing it. I guess DDE is supposed to make it quicker, but so far it hasn't seemed that way, what with errors from foreigns keys and the fix not working, and having to go in and customize the pages to match what I've already done on my existing pages, yada yada.

So has anyone had any real expeirience with DDE? Would you do a complete full-blown professional website using it over the windows forms? It just looks like an admin tool for adding data to helper tables, and not really something serious that you would use to put together a professional website. The backend does look great, but I guess I have yet to see a full-blown app with menus, sidebars, tabs, and the works.

Is all that possible? Anyone used it? What would you do?

thanks.