The only one CURRENTLY selling miners that are viable for home miners *RIGHT NOW* is Bitmain.
There has been at least one other "soon" announcement, out of Lktec, for a miner that the S7 appears to have been specifically designed to try to preempt.
Since the Lktec design appears likely to be based on the "announced as taped out" Innosilicon A3 design, and since Innosilicon has made miners in the past, I expect a fairly good probability of an Innosilicon miner design as well - but even if they do that, I suspect that that Innosilicon's miner would be more along the lines of a rack-mount 4-5U unit in the 20-30TH range, similar to what they did on their A2 Terminator design.
Too bad Spondoolies has abandoned the consumer market, perhaps they'd be willing to start selling their new chip *soon* to someone like Sidehack to build an actual HOME miner design out of.
Well Bitmain "Right now" has nothing. It's true there will certainly be a second batch in October but it's pretty moot right now. Meanwhile Spoondoolies is Selling those SP50, however only in Bulk. Now what qualify a "Bulk" i don't know, but that mean a reseller could get a batch and then sell it to end user.
But there's some serious issues with powering 6000W at home. Noise and heat will make this pretty prohibitive, so even if the home buyer can get a hand on a SP50, it feel like you'd need a crane to move the damn thing around.
Meanwhile Bitfury announce something even better but with no actually hardware available. At least Bitmain is getting some pressure so we might be seeing S7's at reasonable ROI soon. Then again that's pretty subjective if these 3 company sell 150PH of hardware by the halving, there won't be much current miner left after that.
because there is ~10C outside and we need the heat 
