Personally, I find the 4e books to be a much greater value to me and my group for a couple reasons:
#1 The lower word count is due to less complex and more streamlined rules, and because the language in the books is more precise and accurate (using these terms in their scientific sense). While Gygaxian prose has a charm to it, that wasn't the case with the 3e books. There are no meandering sentences that take twice as many words to get the same point across. This also means that a less text-dense page is available, which is MUCH better for reference purposes during play.
#2 I'm actually USING the 4e books, and I've pulled in people to D&D who had never gamed before, and refused to play under 3e.
#3 I find the quality of ideas in the 4e books much more to my personal prefereces and playstyle than those of previous editions. I really like the Feywild, Shadowfell, Astral Sea, Primordials- the list goes on and on. And its easier for me to run 4e as a semi-horror campaign (my favored theme for gaming) due to the nature of the rules and how open-ended they are, as well as the implied setting and tone of the rules.