forget Radeon graphics, they suck.. sure they are cheap... there is a reason for that, cause they plan on you having to buy another shortly after your original purchase
Man no reason to spend 500.00 on any Gpu unless you have a 4k monitor. No reason for 4k monitor because nothing has ever been made from the ground up in 4k
The youtube reviews of the MSI 1080 armor were not good, so I'd expect their approach towards other models in the armor series would also not be that good. You can try Sapphire Nitro+ OC or XFX.