Electricity cost is about 0.1$.

I would like to mine ETH, but if there is anything more profitable I have no problem going with that of course. ETH is more profitable than XMR on both AMD and NVIDIA, or I am missing something?


Here are more detailed options that I have:
RX 470 4GB: 350$ (ETH: 24 MH/S - 65$/month) (NiceHash calculator - 73$)
RX 470 8GB: 400$ (ETH: 24 MH/S - 65$/month) (N/A)
RX 480 8GB: 420$ (ETH: 25 MH/S - 69$/month) (NiceHash calculator - 79$)
RX 570 4GB: 360$ (ETH: 28 MH/S - 78$/month) (NiceHash calculator - 76$)
RX 580 4GB: 370$ (ETH: 29 MH/S - 80$/month) (NiceHash calculator - 68$)
RX 580 8GB: 420$ (ETH: 29 MH/S - 80$/month) (NiceHash calculator - 73$)
NVIDIA 1060: 350$ (ETH: 23 MH/S - 65$/month) (NiceHash calculator - 91$)

I am still wondering which coin would Nicehash mine with 1060 to make this profit...

According to this data, I should be getting RX 580 4GB. But I also know which cards have Samsung memory for sure, should I aim for that?

Is there any advantage for 8GB over 4GB, for future resseling or something?