I'd be more concerned about the rising bitcoin. The used prices of Radeon vii are higher then the 2080. The Vega prices are not budging despite the new Navi. Although nvidias used prices have gone down. I don't know the best mining cards but I suspect it's the radeon vii? Facebook announcing crypto probably rose bitcoin, then the government announcing it's looking into the currency has made it level off for now. Any thoughts?