received my batch 2 order.  cards in the units were only slight unseated.  hashing away nicely at just over 1005 GH/s avg.  I'd have to say that I'm a bitmain convert.  I have a few bitfury kits with Spotswood's open air cases.  I'm liking the builds and how easy these bitmain units are to setup and get up and running.  good stuff.