Silverlight 2.0 is a freaking phenomenal RIA development environment and I would actually, at this point, put the development experience in Silverlight 2.0 above and beyond Flex. I can do more faster and have it look better and run more efficiently in Silverlight 2.0 than I can in Flex. BUT, when you're looking for case studies, look for ones where the person or organization who adopted Silverlight did so of their own volition, without being approached by Microsoft. I'm interested in hardcore, unbiased opinions from people who have been in the trenches doing their own coding, not watching Microsoft consultants do the coding for them. There are plenty of case studies like that out there, you just have to look past the shiny bouncing balls that are the Olympics and the Oscars and all the other crap that probably cost Microsoft a hojillion dollars in marketing funds and incentives.