A look at WPF from a Flash background
Lee has some really cool WPF demo's and has been using WPF for his research and work projects. Lee comes from a Flash background and in this post compares his experinces so far with working with WPF\Expression to working with Flash. His insights and thoughts don't weigh in as pro Flash or pro Microsoft but is a very balanced view. Of course Microsoft still have work to do on the Expression tools and you will expect that Flash is going to win some area's and WPF in others. It's really this sort of balanced feedback that Microsoft need to listen to. Lee does mention that he spends a lot of time working with C# rather than markup, it really depends on what your doing as to where you spend your time, more advanced topics require more time in the API but thats the same for Flash or any other RIA, nature of the beast I guess.