hi,

i am confused and i need your experiences please

i have two choices

1- bought Antminer S7 from china
it will cost me 1200$ to my country

using it to mine by myself ( i have free electricity )
Hash Rate 4,7 = 7.21$ per day

2- bought 7,5 TH/s from genesis-mining with same price
equal 11,5$ - (0.00079*7500) ( for maintenance ) = 5,75$ per day


what is you choice ?