I ran the numbers with this: http://www.alloscomp.com/bitcoin/calculator.php
I pay .11 per kwh on average.
Um, you need to 'run the numbers' again.
At today's difficulty of 1376302, @832Mhps, and $5/BTC, will generate $3.04 per day using 2kWh of electricity at a total cost of $0.22. So you net $2.82 per day. Cost of Single: $600. Let's ignore shipping and/or tax. $600/$2.82 is 213 days or 7 months payback period. If instead you go with the next predicted difficulty of 1,411,550, your payback period becomes even longer.
Not sure how you 'ran the numbers' and got 4 months out of it.
Must have been the same way you somehow got '3 or 4' Icarus or x6500's to equal the hashrate of a Single. Try 2.2 Icarus.
I suggest you stop spreading FUD.
What's your numbers for Icarus? Based on your numbers for Single, Icarus runs about 14+ months payback period. So the Single is only twice as good, instead of 3-4x as good? I mean sure he was wrong, but it doesn't really change what the better option is.