One of the main reasons most people get GTX 1060 is because of its availability and price compared the RX and other cards. With Ethash, the GTX gives 24.x MHs compared to 27 of the RX (without the BIOS mod). But the GTX consumes much less power than an RX. It does not perform well with the Cryptonight algo (550 H/s vs 750+ H/s) as well. Apart from these two algos, the GTX card performs similar to or better than the RX. AMD cards vanished from the market four months ago when Eth was the most profitable to mine. Now, the profitability of all alt coins is evened out and GTX 1060 strikes a best balance between hashrate and price. I have 2x GTX 1060 and 3X RX480 on the same rig with two 750W PSUs. I can see that the two GTX cards are much more energy efficient.