Like a few others here am teetering on the point of ordering a new system, and pondering v4 vs v5 vs waiting for MS2020. After reading this thread I may grab v5 in the interim.
For my new build am going AMD for GPU and CPU (no haters please
as want to use the machine as a hackintosh also and they play more nicely with the AMD GPUs (and yes MacOS will run on a Ryzen CPU now). Am looking at the RX 5700 XT which is similar to your 2060s performance wise but am wondering how it will go with P3D as it sounds like it still performs better by taking advantage of Nvidia/GSync and the like.... tough decisions aye.