SIGT! Low difficulty gives lots of coins

Lots of coins that aren't worth poop, But what do I know

With my older cards I am mining Zcash and with newer RX series i am mining Ether + Decred
They seem to be most stable in terms of return. Some coins give more but it is short lived
What new cards? & what's the advantage of mining both? I know lots do it but never quite understood the advantage. How is your Eth hashrate effected when you mine both?
The Hashrate stays the same...only disadvantage that your cards will use a bit more power. The advantage is that u can mine eth and some other coin...so its more profitable...and the dual coins are great projects..look at sia or decreed. i like them