I'm not sure if I want to invest in these. It depends on the content really, and whether or not it contains the information I'm interested in, such as exact (to the day) dates for releases, which is especially noteworthy once the range moves to immediate downloads. In short, can I *use* the information contained within, or will the books just be an interesting read. Money is very far from being no object, especially as I've got a backload of about 1500 worth of CDs still to get, so I'd like to be assured of such things before I buy.

Also, is this an ongoing series that will be the ultimate reference guide to BF, or has it stalled at just the two books?