yet if isn't release the s6 .
then what will do i ?
probably better s5 buy.
i think s5 more anyway will be profitable in future
Why would you think that? Don't think on your own when you don't have the required knowledge to make such assumptions (you've been asking many questions). S6 will definitely be more efficient than S5.
This just depends how much the GH/s per W ratio is.
I'm just going to tell you that you should not expect to be making money off of mining.