A discount on the FURY X's would be nice or nicer on the Zotac 980TI AMP Extreme Edition (sold one for $460) but anyways, those cards will blow past gtx1070 reference and probably catch up to GTX1080 once the TI is OC to about 1550mhz..... they perform about the same but obv pascal is more efficient and will thus last longer without the OC. However that being said you're better off with AMD and cheap FREESYNC screens and bang/$ on DX12...
mikemihai89a 1550 980TI will not hold up to a 1080, it won't even keep up with an overclocked 1070. And price performance wise a 1060 is the card to beat. AMD really had it going for a bit with the 480, but the 1060 kinda made it so the only reason to get one was if you had a hard budget