My RMA experiences have been nothing like that.  I sent them information about the problem on the first one and they started to go thru the problem solving issues.  After the first return email - the next day - I replied with images of the ssh screens and the advanced page and status page with and without the defective unit.  The next day they had UPS send me a RMA return package, and they received the unit in 2 days at absolutely no cost to me, although they warned me that if I sent more than one unit back they would charge me for the extra shipping cost.  The second unit failed about 2 weeks later. This time I sent them the issues and images at the same time and within 2 days received another RMA return from UPS, and it was received 2 days later.  I find that just trying to get the problem resolved and not playing the blame game has been working for me.  

I have not received any info about the second RMA as yet, but they did offer me the 2 for 1 exchange on the first one.  I tried to get some idea of when the next asics would be available and could get no commitment to any timeline from them.  I am choosing to wait for new ones as they should (hopefully) perform better.

The 2 for 1 RMA replacements are defective units.  They have die issues but are supposed to give the performance of 1 cube.  I personally think they should build a little good will and send out 2 for 1 new units when they are available, but I wouldn't hold my breath on that one.

KNC plans for BTC domination may have hit a speed bump:
http://bitcoinbrothers.de/press/pr20141103