1050ti is best bang for buck atm. For the price of one 1060 you can get two 1050ti. You don`t, however, get the double hashrate on 1060. Not to mention 1070. What concerns me, though, is when the DAG will become too big for 4gb cards...
That shouldn't concern you. ETH will be PoS before DAG Buffer reaches 4GB, so mine while you can
