Aw, thanks, Asbestos. Please continue to Champion. We need all the help we can get.

As for the first book, if you get into specifics comparing its content with that of the 3.5, you'll notice a lot more original content in the 4E version. The 3.5 Edition had a lot of OGL copy work done with other elements borrowed from D20 Modern. The 4E version is all original despite being 100 pages smaller (300 from 400). More artwork in the 4E version to.