I used this one for a while, and then tried out the quicksand variant. Basically, I took 3 Antlions and 1 Shreiker out; and then added 4 Quicksands. So far it has worked wonders.
Yes, Quicksand slows the aggro deck; but as someone pointed it out already, it slows them down more than it slows you. It has been very crippling against Rainbows (Both time and Entropy); and played smart can also cripple almost any duo deck. Yet, it stills maintains enough speed like to regularly outspeed rush decks (I still regularly win against Life rush decks).