I’ve been a vivid ORBX user on FSX but not so much now. I guess, coming over from FSX and having skipped the whole P3D thing I’m not used to much in terms of scenery (as FSX was limited to the 4 GB VRAM so you couldn’t get too crazy in terms of sticking scenery layers over each other).
For me, running MSFS on a new PC with most settings on ultra I can’t really see a scenery upgrade anymore that would justify additional expenses. At the same time tough, I guess that’s also about what type of simmer you are. For me the flying matters most so I love great add on aircrafts and that’s what keeps me going. Buying a whole lot of additional airport scenery’s doesn’t interest me so much as in my view they’re just 3D pictures of industrial terrains that in the end don’t do a whole lot extra than just sitting there as I taxi by.
I’d probably spend some money on my home field (Schiphol) as I pass by that one a bit more than others, but other than that, it really just isn’t worth it to me in a sim already looking that good, with freeware scenery in the makings and updates on the way.