Hi Damian,
While it may be one of the "best" books ever written on investing it is not one of my favorites - which is how I characterized my list. I prefer the modern update of Graham and Dodd's "Security Analysis: Fifth Edition" done by Cottle, Murray, and Block.
Also, how could I not recommend my own book as a favorite? That would be disingenuous of me to write it but not like it : )
Hope you enjoyed the post!
Jason