But a warning to anyone thinking about doing business with Bitmain, dont!
I've been looking into setting up my own mining rig and I'm at the point of choosing a machine as well as which coin to focus on, but after reading your review and many other bad reviews, I think I'll stay clear of Bitmain. Do you or anyone else know of any other companies that sell bitcoin asics? That actually have a good reputation I mean...
I've been running a Bitmain Antminer S9 (batch 7) 24x7 since 2016-07-25, which is 301 days at the time of writing. It's still hashing at spec and I haven't had any issues with it. I've left it on stock settings - I don't overclock my miners, they seem to last better that way.
I've been mining since June 2013 and the Bitmain S9 is one of the best miners I've ever owned. I only have one, and maybe I got lucky on the reliability front, but there you go.
I've also previously owned an Antminer S1 and an Antminer S2. The S1 was rock solid, and as far as I know would still work, I gave it away in fully working order to Techvana Museum (a computer museum in New Zealand). The S2 was ok, but the daughter boards tended to get dislodged during shipping so it wasn't as sold and fool-proof as the S1 form-factor - which the S9 and T9 are descendants of. Bitmain abandoned the "desktop PC" form-factor for miners, which in my opinion was a good move.
I've owned miners from other manufacturers too, but my review of them would be no use to you since none of those manufacturers still sell miners.