I can use XMRig.com or even XMR-Stak to mine with multiple GPU's right? I prefer Arch Linux/Ubuntu but does Hive OS take any fees?
If you have 1 mining farm, then all functionality is free. If you mine coins on their pool, then there are more farms there for free. It is easier to mine in Hive OS because you will constantly jump between profitable coins and the setup is much faster there.