I think ethOS only support Ethash algo or they only have limited algo supported. If you are planning to mine only ethereum you can use this OS but if you are planning to mine with different algo go for other OS like SMOS/HiveOS or just windows for more flexibility.

If you stay mining with ETH you can't make a profit or you can't reach your ROI back. GPU miners mostly mine what suggested from whattomine. But for me go for windows OS and mine Beam coin then hold.