I had to turn it around because of the fan exhaust. I didn't want it to blow directly into the wall. Now I am getting around 28 MH/s for ethereum per card so around 190.

We were testing 1080s evga FTW it was giving around 32 per card stable, but you are right, the price difference between 1070 and 1080 is too big for few hashes that you can get on 1080.

For how long are you running yours? How fast was the return?