Not to jack this thread but I have not yet run more than a test batch of either. We are waiting on our 40 mw expansion to be up and running before we purchase any large orders. So far the S/T15 series from bitmain as well as the M10S have been ROCK solid and even slightly out performing their numbers. The Innosilicon units I am much less enthused about as they consistanly run 1-2TH under spec at full power draw.