I have experience with the original Reverb and the Quest 2.
My thoughts: The Quest 2 is the more bulletproof, reliable headset. I had problems with my original Reverb, it was replaced under warranty, and then the replacement unit went dead after the warranty expires. Its now sitting broken in my closet because I can't get through to HP tech support because my warranty is expired. My Quest 2 has been reliable from day 1, and I use the Oculus link cable ($80) and the upgraded headstrap ($50).
The Oculus software is far superior to Windows Mixed Reality software. But the Reverb G2 will give you better resolution and clearer, brighter visuals. FOV is close in both I think - and to me, it feels sort of like you're wearing a SCUBA diving mask. But I can convince myself easily enough that I'm wearing WWII flying goggles, so its not a very serious problem. But a wider FOV is better.
Your 2070 has plenty of power for VR in Aces High, even with the G2. With its high native resolution, you don't have to mess with supersampling, which drains performance.
Limited tracking volume refers I *think* to how well the headset's cameras can track your hand controllers in space (low, high, behind your head, etc). Shouldn't be an issue for sit down flight sim use.
I consider myself a biased reviewer, against HP because of my experience with their tech support and poor hardware quality. Otherwise I'd be all over the G2. The Oculus, at $300, plus $80 for the link cable and $50 for a comfortable head strap, is getting close to the price of the G2, which has much superior visuals I'm told. However if you choose the Oculus, there are a few advantages too.
Either way, prepare to be blown away. VR completely changes the Aces High game experience.