I would wait for the Quest PRO release in a few weeks. They said it is gonna be a high end headset around 700$? so maybe it will be something worth considering.
Otherwise I have a Index and a G2. The G2 is much better for flight sims, but night flying is poor.
Personally I think the G2 FOV is already borderline low which makes me not consider the Varjo. For flight sim´s vertical FOV is very important. But the clarity must be amazing.