I have a Rift CV1 and currently use a Rift S. Both the Index and the G2 would be an upgrade. I want both resolution and field of view. But after reading forums and tech sites, watching a lot of youtube videos, and thinking about my Rift experience, I decided I valued resolution over field of view: I chose the G2. I am expecting the image quality improvement to make a huge difference in my VR experience, but it will still give me a slightly better field of view. The lower price is just icing on the cake!
The real problem is the throughput of my cpu/motherboard and my gpu bottlenecking the G2. The 30 series gpus aren't performing as well as claimed when running conventional rasterized applications, they are also short on supply and therefore will be high on price. The most cost effective solution (if an MSRP of $700 can be considered cost effective) is a little short on VRAM which will hurt VR, particularly at the high resolution that the G2 runs. So, until the smoke clears from the new gpu releases with adequate stock and fair prices, I am going to focus on building a new gaming rig. But I am waiting for the next generation of AMD cpus to be released before I make a final decision on building an AMD or Intel PC. If big Navi is competitive with the 3080 but at a lower price with functional drivers, I may end up with an all AMD system, which I once had with my Athlon 64 Venice cpu and Radeon series gpus all the way up to the 7970 GHz edition. So many variables and so much waiting to see what happens over the long run with performance and cost-effectiveness.