I've gone with Nazi-esque elves, Communist Tieflings, actually organized Neo-Liberal Drows, Undead as cheap labor and as rulers of Germanic-esque kingdom, the humans being the cavemen, and one of my favourites halflings as mounts and weight carriers.
I'm firmly stablished in 3.5, I don't really like the 4E feeling and what really turned me away was the almost instant publishing of 4.25E
That's quite a luck.