KNC Titans are iffy if they're profitable at all now - if your electric rate is LESS than 5 cents per KWH they can be, but you need to be down in the under 3c range for them to generate significant profit today - and even THEN half or more of your gross earnings will be going to the power company.
Their efficiency is not a LOT better than my A2's - and even with my SUPER CHEAP electric rate my A2s are barely better than break-even right now and for most of the last couple months - I even had them shut down for a couple days because they dropped BELOW break-even during a dip.