Depends. There are many die-hards out there would would scoff that a series like Sword of Truth, Wheel of Time or even Michael Moorcock's latest Elric Works (Son of the White Wolf, Revenge of the Rose, etc...) could hold a candle to the original material.
In my opinion, we simply have a wider selection of materials and because a lot of the writers are in the 'now', the language is easier to read. People generaly have an easier time reading George R. R. Martin than they would the Worm Orobous.
There's also the matter of things in print. Clark Ashton Smith, Liber, Howard, C. L. Moore, and others periodically go out of print. Hard to compare X and Y if X is not readily available.
The genre is also more assured of itself. A lot of the older works were more stepped in traditional myths and shared 'history' so to speak while newer authors have no problems coming in with tons of details to flesh out their series.
In terms of actual D&D books, no. Most of them, are at best, popcorn reading and are inconsistent with the rules and material set forth in the game. As they should be since the game has undergone several revisions.