i have been used nanopool since its beginin..... they rice the pool fee from 0 to 1%, start minimun payout in 1Pasc and now they rised to 5Pasc..... and really don't know how many times they pay in a day.... today i found-out a new version of the miner (SG-Miner) in the faq page.... and the Mh rise like 10%.

My rig has 6xMSI RX480 4Gb and each is in 721Mh/s ...