I also picked up a more advanced Techical book and I am looking forward to dive into it, but I have not started reading it just yet. This book is Professional SQL Server 2008 Internals and Troubleshooting. While I have not opened up to page one and started reading it, I have used this book already 4 or 5 times to look things up to help me troubleshoot some issues. So far I would say that the book has already paid for itself just in the time saved looking things up in it and not sifting though hundreds of Google Hits and then looking for good information on the issue.
While I still consider myself new to SQL Server I do think that I am ready for a book of this caliber and I look forwared to getting into it and trying out many of the tips and tricks that I am sure the book holds. I think that understanding more about how SQL Server works under the flashy clicky gui pages will really help me be a better DBA and make my servers better for customers. Also I know that Brent Ozar (Blog | Twitter) is a co-author of the book and I read his site everyday and find myself disappointed when he does not have a new post. I like his wit, his writting and his knowledge level so him being one of the authors was a big selling point for me.
After I dive in I will give a full review on the book but I am sure it will be good. Most books that I have read from the Wrox publisher have been very good and I only expect more from this book.