Liking what I had read so far, with the exception of a large amount of material in Races of Eberron, I decided this would be the setting I would utilize, while my friend(s) handled everything Faerun.
My point here is this.. I just picked up the newest Eberron release, Five Nations and I have to say I wish all, or at least most, v3.5 D&D sourcebooks were like this one. The book far exceeds the standard "Book Chock Full of PrC's and Feats". There are NO feats, only 5 prestige classes ( one for each nation ) and a few specialized monsters pertaining to their region. The rest is all fluff, story-rich goodness that any D&D'er would find enjoyable reading. There are entries such as a list of well-known sayings from each nation, name lists, and even popular cuisine for denizens of Thrane, Cyre, Breland, Aundair and Karrnath.
If future releases are like this I will be sticking with the setting for a while. I hope future titles such as The Explorer's Handbook keep up to par. Even the one before Five Nations, Sharn: City of Towers, is the same way; it provides loads of backdrop that defines more of the world.
With any luck, even Magic of Eberron will define certain characteristics of this otherwise young world.