yeah but the price difference is also 2:1...the ROI on the Whatsminer is 75-80 Days the ROI on S9 - A8 is over 125 Days.

I learned from doing investments the faster you get your ROI the more you "win".

also Bitmain and Canaan in my opinion are like going into a Ferrari Dealership. They don't want to make business they want to stick to their "LONG" Customers..

I mailed both for Bulk purchases Bitmain didn't even consider to answer and Canaan just told me they are sorry we don't have at the moment Miners for sale.

I didn't even purchases 1 Whatsminer and for me they are the Winner in terms of Customer Service. They are talking DAY AND NIGHT to me.

If i get the Electricity deal i am considering to go to China and talk face to face. They told me they don't have a problem to show me their Product and Discuss everything. 

I went many times to China because we are dealing also with Mobile phone accessories and Construction Materials in Lebanon and this is typical for me to talk directly to them.

One last question: I am not a Electrical Engineer but is my math right. If i get 100 Miners and each need for example  4-5 amps and 2kw do i need a 400-500amp Main Breaker?