Professional Microsoft SQL Server 2012 Reporting Services from WROX publishing (by Paul Turley and several others) is what I ended up getting and so far its been a very good book. There are some gaps (missing details or info with regards to steps when you are suppose to follow along) but nothing to detract from recomending it.

I have a much better understanding of SSRS now in general. I believe what far too many pro-SSRS people adress is the massive (yes I mean massive) differences between traditonal "banded" reporting (used by products like Crystal Reports and even MS Access ) and this object oriented reporting embraced by SSRS. I may be wrong and maybe object oriented reporting is very popular outside of SSRS but I had never heard of it prior to SSRS.

Unless you are a newbie to reporting you've porbably been taught/learned report wrting using the banded method. Its a major shift from that style of reporting to the OO Reporting in SSRS and it appears that this is ignored or downlplayed too much by many in the group pushing SSRS. When SSRS was new, a version 1.0 product it was expected that some things would not work. Even as of the latest version of SSRS that comes with SQL Server 2012 there are mising and or broekn feeatures that are hard to excuse. For example, not being able to repeat group headers/footers on more then the first page. This may not seem like a big deal but depeneindg on your industry the inability to repeat headings on sucessive pages is a major mistake. But I digress...

From what I've read so fgar this book is a definate recomend.