Best IFR textbook?

[skyaddict]

My only beef with the FAA's material is that it weighs in so heavily towards the "primary-supporting" method rather than the "control-performance" method of basic attitude flying, which I personally feel is teaching an emergency technique as the primary way of flying light GA IFR, but that's a whole 'nother thread. However, at least the FAA matarial now does include the c/p method, even if it's given relatively short shrift.

 

[Lynxman]

FAA just put out a book not to long ago on advanced avionics.

http://www.faa.gov/library/manuals/aviation/

Should be there not a bad reference to use.