Buy 1080Ti and mine DGB skein algo...

It does 950-1000MHs.

https://whattomine.com/coins/114-dgb-skein?utf8=%E2%9C%93&hr=950.0&p=0.0&fee=0&cost=0.0&hcost=0.0&commit=Calculate

Other options are LBC, skunk,...

It's better bang for buck than any other card