Book recommendation: Silverlight 4 in Action

Looking for a solid (literally) book on Silverlight 4? If so, this nearly 800 page behemoth of a book is quite impressive!

After covering the basics, Silverlight 4 in Action dives into more advanced topics such as networking, MVVM and WCF RIA services. I'm only halfway through the book so far but have found it to be very thorough and easy to read.