Having a Kindle, I ordered the kindle version. The information within the book is essentially the same, with a two caveats.
First, the publisher of the book decided to insert the charts (which contain text) as images. This means they are not searchable. These same charts are microscopic, so you have to zoom into each chart to view it. If the publisher had taken the time to proofread this text just once on a kindle or any of kindle's reader software (PC/Android/iphone), it would obviously have been corrected.
Second, the kindle itself is a little slow for a book which is meant to be a quick reference. This text would be an amazing addition for e-book format on a tablet if only the chart and diagrams weren't so small.
I ordered the hardcopy and will request a refund from amazon for the kindle version.