Are there ANY coins worth dual mining now?
Nope. I went back to mining exclusively ETH.
Any second coin you try to mine costs you more in electricity currently. Not worth it. Want a secondary coin? Buy it.
Spot on. Ethash mining only is the way forward for right now.
I decided to do a quick compare on a single GTX 1070 machine (in hiveos so it is consistent):
1. Eth mining only: 29.3 MH/s @ 144W
2. Eth + XVG: 29.2MH/S Eth and 292MH/s XVG @ 158W
So for this single gpu including XVG mining costs me .1 MH/s of Eth mining and 14W of power for 292MH/s of XVG blake2s mining. That seems worth it? I don't have any calculator that includes XVG using blake2s though.