Well I ran a mostly AMD mining rig earlier when ETH was at $50-$399, then when it dropped under $300 I sold all my equipment. And yes, Nvidia does not require modded BIOS or special drivers (at least not that I'm aware.) and are easier to OC. So yes I had thought about that and am leaning toward Nvidia.
Oh ok you know your way around then
well the versatility point is still valid