I've been using the G2 since I got it Friday 13/2020, so a good 4 days worth. I didn't find the same issues with the hand controllers as the reviewer quoted in the above post. Mind you I, like Mayhem don't really care all that much about the controllers or games that require them, but the games I tried with the controllers all worked fine, certainly no worse than the G1 Reverb, or my Index, or even Rift S.
Cockpit games, ie flight sims and racing games, the G2 is easily the best VR HMD I've had, and that list is Rift/Vive/Vive Pro/Odyssey/Odyssey+/Pimax/Index/Rift S/Reverb G1/Reverb G2 so far. The head tracking is excellent IMO, I have zero complaints about my experience in DCS, Ah3(offline), Star Wars Squadrons, Elite, Il2, etc.
FOV is essentially the same as the Reverb G1, which I've been using about a year now. It's hard to recall the other HMDs exactly, but I think the Index had a bit better FOV, as did the Pimax obviously. but the G2's FOV isn't some sort of game breaking issue. Again, zero complaints regarding the FOV from me. The "sweet spot" is expanded quite a bit from the G1 Reverb, it is instantly "there" for me right when I put the headset on now that I have the straps adjusted to my head. The overall experience with the G2 is excellent IMO, again, easily the best HMD I've used so far in terms of sit down/cockpit games. I've continually sold off VR HMDs as the next/better ones come out, and I instantly put my G1 Reverbs up for sale and ordered a 2nd G2 for our other PCs, within a couple hours of using the G2.
IMO it's well worth the cost, and skipping the G2 and waiting for the next better HMD IMO is a personal choice, but doing that means you'll never get your foot into the water, as there is always a better unit coming down the pipeline. I think the G2 will hold the top spot on the ladder for at least a year, as the last G1 did, so far as sim players go.