What is your power cost? you need to be under 10 cents to stand any chance at all if you run the miners at your home.
Depends on the season. I'm at about 10.3 c/kWh if you average the costs throughout the year.
I'm also looking at Hashnest because the maintenance fee is cheaper than my electricity cost. What I keep coming back to is the increase in block difficulty. It looks like a Hashnest S5 barely pays for itself before becoming obsolete, assuming the difficulty continues to increase at the same rate over the next two years.