What about Ubiq (UBQ)? It seems to be a pretty good coin in the long run and if you see the charts for it... it shows potential of big growth.
You could mine about 0.5 UBQ per day with an RX580 8GB, maybe even more...
You would be better off mining ETH or some other profitable coin then simply convert and buy UBIQ if you truly believe in its potential value. This strategy has already been proven far more effective in many discussions in this forum.