I assume so as well... Fucking bloody hell...
https://www.bitmain.com/ I assume is main one? Anywhere else that is confirmed to be GOOD lol
Yes bitmain is trusted name in the field of bitcoin mining hardware, their latest antminer S9 series is most efficient bitcoin miner available till now. However there is no any S9 available right now to buy from them.
AFAIK, you have 2 big, legit, companies selling ASIC's:
https://www.bitmain.com/ with their antminer product line
https://canaan.io/ with their avalon product line
bitmain is more or less known for cheaper hardware, especially when looking at the power draw per Gh/s or the cost per dollar per Gh/s. They are also known for having bad customer support and having product lines that fail easily.
Canaan is more or less known for being a little more costly, but having good customer support and sturdy hardware.
Haven't checked canaan before or even haven't heard about them, thanks for info i will check them also it seems they are still shipping 6 th/s miner for <$900 which i think is good price.
There used to be a couple other good companies, but AFAIK, those two are the two only reliable producers that are still producing ASIC's at this moment.
About canaan: the 6 th/s miner is their new product, there was a quick review on this forum, but i can't find the link anymore. You could potentially buy an avalon 6 on this forum, it'll probably be a lot cheaper now.
From what i've read, the AvalonMiner 721 is less energy efficient as the antminer S9, and more expensive, but it's very well built and the company actually seems to care about it's customers (i'm not a miner b/c my electricity rate is waaaaay to high, so this is all info i've read on this forum myself)
well they are not a cloudmining like hashnest, genesis or whatsoever, they are actually selling a mining hardware categorized in different cryptocurrencies although they are not a cloudmining service that site still looks suspicious . 
