30 hours ago I started my own test of HR vs Nicehash vs zpool vs MPH(auto exchange to BTC) vs Ethermine(just ether). Put 5 rigs each 4x1070 clocked exactlye the same with locked voltage on 0.900v, 1797mhz and 4400 mem.

So 30 hours after the start:

Hash Rafinery: 0.00201 BTC
Nicehash: 0.00223869 BTC
zpool: - got too many times API down and no mining and had to stop mining on it. at the time of the stopping(10 hours after the start) it was like 15-20% behind HAsh rafinery. Honestly this site has bad reviews and i got bad experience with it for the last 30 hours.
MPH: 0.00181131 BTC + some not exchanged yet coins - https://vgy.me/UVopzn.png . I think its on par or little ahead of Nicehash, but i will know once i stop the race and wait everything to be exchanged.
Ethermine: 0.02778 ETH  which on exchange rate right now(0.075) is 0.00208 BTC, on the exchange rate from last night(0.080) is 0.00222 BTC