Nice analysis!  Just to be fair, if the power usage is double, an extra 700W can cost an extra $100/month if you live in high electricity cost area ($0.20/kWh).  On the other hand, the price of the S1 is constantly adjusting downward and has just dropped to 0.532 BTC.  With the price of BTC continue to be depressed at $430/BTC, the equivalent four S1 Antminers (720 Gh) is only $920.  So the Habanero is almost $600 more expensive.  Whether or not the energy and space saving is worth it is up to the individual miner.  I do hope MrTeal will reconsider their pricing especially considering the warranty is better with Antminers 90 days vs 14 days and Antminers ship in 2 days vs pre-order (how many days?).