Dark Elves
3x Shades
3x Vile Sorceress
3x Walking Sacrifice
3x Clan Rats
3x Gutter Runners
3x Clan Moulder Elite
3x Deathmaster Sniktch
3x Greyseer Thanquol
2x Rat Ogres
3x Har Garneth
3x Contested Village
3x Warpstone Excavation
3x Chillwind
3x Caught the Scent
3x Innovation
3x Hate
3x We Need Your Blood
This is what I feel to be the best version of the standard Dark Elf/Skaven build. The economy is incredibly efficient (it requires only four resources a turn) due to the Skaven and cheap Dark Elf units and it has a decent about of switch potential. It is not as fast as Orc Blitz that gets a good start but nonetheless it can burn two zones in three attack phases if you opening hand suggests a blitz strategy. The reason that I played this over Orcs is that flexibility. You can chose between blitzing and board control which gives you more of a chance against Orcs whilst being able to exploit the vulnerability of Order decks to strong aggro builds.
Apart from the broken cards in the deck (the three Skaven and Warpstone Excavation) Hate has proved to be game-winning. Being able limit or completely cancel your opponent's first turn is such a powerful (and negative) effect, which combined with a cheap and efficient economy can give you the equivalent of half or a full turn of tempo.