So finally I went ahead with Zotac GTX 1060 3 GBs.
Created 2 new rigs of 5 cards each.
Using claymore miner and stock settings, each card gives ~18.5 MH/s.
The best thing about this card is the power usage, I have both the rigs using ANTEC 750 Watts supplies and are doing good. Tough the GPU-Z, for some reasons, would show the power consumption in % of TDP, I believe that the cards are taking no more than 70-75 watts each.
My previous 2 rigs with 5 x RX 480 each, needed additional PSUs as each card was consuming ~95 watts, and one of them, for some reasons, 125W.
Any suggestions towards increasing the MH/s for 1060s?