I would not have bought RX480s, they're not really more powerful than the RX470s.
That said, I think ZEC will go back up once they fix their z wallet bug. Also, it's still more profitable to mine than ETH for the moment...
no, it is not.
Uhm, yes, it is. I have 3 rigs total, 1172W @ wall for 490S/s. That's almost 24$ a day of profit. No way I can achieve this with ETH.
I use something like 20% less power on the same rig for ZEC.