Need gsync and prefer nvidias approach to drivers.
There are only two Turing cards that I would consider upgrading to at this stage, the 2080Ti or the 2070Super. If neither of those are appealing to you, then wait until the next gen appears.
If you really have an upgrade itch, get the 2070Super now. It's a great card and will notice a big difference between it and your 1080. I switched from a 1080ti to a 2070s and am very happy with the change.
