What are the Best Expanded Core Race Books?

[Qwillion]

There is heroes of high favor, the advanced races books, the quintesential series and a host of others.

Which ones were really the best though in expanding the game and the role of each race?

 

[howandwhy99]

Here are the book I can think of that dealt specifically about PC races. There are just so many others though that include portions, any of which may be better than another book entirely.

BadAxe Games
Heroes of High Favor - Dwarves, Elves, Halflings, Half-Orcs

Green Ronin
Advance Race Codex - One for each of the PHB races.
Races of Reknown - Aasimar & Tiefling, Halfbreeds, Wood Elves, Orcs & Half-Orcs.

KenzerCo - Tellene series
Elves & Bugbears, Gnomes & Kobolds,

Mongoose
Quintessential Dwarf 1 & 2, Elf 1 & 2, Gnome, Halfing, Half-Orc, Human

Wizards of the Coast
Races of Eberron, Faerun, Destiny, Stone, Dragon, Wild,
And other supplements including new races.

The Le, Philip Reed, and the PDF Crowd.

 

[Qwillion]

yeah but which one is the best for say: elf.