Recommendations on Lighting and Rendering Books

I’m looking to buy one of these (“Blender 2.5 Lighting and Rendering” by Aaron Powell and
“Digital Lighting and Rendering 2nd edition” by Jeremy Birn.) I would appreciate it if someone would give a recommendation to one or the other. If you own one of them please tell me what you thought of it. Thank you.

Have a look yourself. Only you will know what is most applicable to your own circumstances and what you want to get out of having one of these books.
http://www.amazon.co.uk/gp/reader/0321316312/ref=sib_dp_ptu#reader-link
http://www.amazon.co.uk/gp/reader/1847199887/ref=sib_dp_ptu#reader-link
Review: http://www.blendernation.com/2010/11/16/blender-2-5-lighting-and-rendering-ebook-review/#more-16413

Thank you for the quick reply, I have looked in to them, and then came here for other input. I was not aware of the review on blender nation. With that, in conjunction with Andrew Price’s recommendation of Digital Lighting and Rendering I’m leaning in favor of Digital Lighting and Rendering.