You might want to consider zotac 1070 or palit super jetstream. They maybe cheap but still gets the work done. You should buy atleast 6 gb cards for future proofing amd yes 1070 is the best option. If you are into modding bios which may void the warranty go for 570s but if you want a plug and play, go for 1070. 1070s after market sales are better than amds I think.