Question Vega 56, GTX 1080 or 5700 XT

[Shodoman]

Hello everyone,

Need a bit of help with my next card. Want for gaming: Witcher, Dishonored, Assassin Creed, Warframe, Wolfenstein, Dota 2

Have to pick from these 3 options:
* Asus Strix Vega 56 second hand 160$:
+good price to performance
+fits perfectly with my other components
-worst performing of the bunch and don't know if bios flash would work or improve it's performance
-bit shady as next price for same model is 230$ sh
-all money upfront

* KFA2 GeForce GTX 1080 HOF from a friend for 230$:
+best price to performance, i think
+could pay in 2-3 rates
-don't know if my Freesync Samsung C24FG77 will work with it
-would prefer AMD
-it will look ugly with my setup

* Pulse/Gaming OC 5700 (XT) retail for 415$ (460$):
+best performance
+3 years warranty
+can pay up to 24 monthly rates with no interest
+probably most easy to resell in 2 years
-worst price to performance

Would appreciate your feedback.

My rig is a Ryzen 2600x on a X370 Asus Crosshair VI Hero, with 32 GB of G-skill 3200 memory. All in a CM Mastercase H500. Samsung C24FG77 144HZ Freesync monitor.
RIP my beautiful Strix Vega64 which i broke last week. I'm an idiot.

 

[Shodoman]

Anyone have any advice?