From what I'm seeing S5+,S7, KNC Neptune,  sp35/31. I saw a few on suryastore that have good TH/price of machine but not sure if the site is legit or not. I like the look of the rockminer and smart miners.

Also electricity is a factor. I'd rather a pissed off landlord who bundles their electricity knocking on my door rather government officials. And a dad with no job. Seriously dude think this through. Think of the environmental impacts of running a bunch of inefficient cheap machines just because you think you can.

Edit: Google search and back in March. Tells all. It's amazing isn't it lol