Hi.
For example I have a rig with old 5x amd R9 280x.
The cost of electricity is not important for me. (free) 

My Hash Rate:
CryptoNightV7: 2500 h/s
Equihash: 1400 h/s
Lyra2REv2: 110000 kh/s

Which coin would be smart to dig?
So far I had on auto exchane to BTC (nicehash)
Thanx