I just made another order yesterday.  You are either in or out in this business; even through the negative speculation.  Many people are holding off is a sign to me to buy!  The early chips like my S7s were/are my most stable configuration with overclocking capability and stable cooling.  I do not overclock all of my miners, some are underclocked, but you have to find the sweet spot for each miner.  There are those that speculate on the basis of the BTC staying the same....I say this is incorrect.  I believe that there will be a dramatic increase over the next six months.  

My 2 cents.