So its pretty much Dragon Miner vs Antminer s2 !! The one thing I wonder is if Bitmain will be able to keep up with china on manufacturing these things. You can get a 1  t/hs dragon miner right now and have it at your door like the sold out batch one S2 orders by April 1st for 3600$ !! I just hope Bitmain gets some stock going and stops doing Pre order batch orders. 1 or 2 batches is cool but once you go past that people are paying for a Pre order and getting it months later.. Anything longer then 2 weeks of  time after you pay is too long .. People need to start getting the clue there is no reason to do Pre-orders for any type of mining hardware !! Those days are over there is way to much competetion for that crap !! And that goes for kncminer and any other manufacture!!