I find dark environments to be overall great. Stuff like Synth RIders opening on the black logo and other dark areas like in Village look great. It's OLED so it is lit per pixel, you're getting really the most incredible contrast of any headset on the market with the HDR on top. Sunsets, strong lights and flashbombs can be blinding, literally.
Really there's just no way to be disappointed with the colors, it's the strongest part of the headset. I lower my brightness to around 70% and it's still damn bright. Some people are crazy and go close to 0% to get right of some mura, but I think that looks horrible. I don't mind the mura normally, like it's there in a lot of games, the neutral/gray/shadows (not blacks though, those are pitch black perfect) are the worst, and it's really bad at rare points, but overall fairly ignorable. I definitely forget about it for the most part. But Quest 3 basically doesn't have any ever. Still, the blacks are worth it.
I really don't mind the reprojection at all myself. RE Village uses it, and IMO it looks great. I can move my head and the screen redraws at ~120fps with the reprojection, and I think it looks great. I get no after-image or whatever. And moving with the analog in game is great as well - I use no handicaps in VR now, and it's glorious. But I have no complaints at all about the 60>120 reprojection, finished the entire game of Village, and it is incredible.
There's the horror section where you're in pitch black and it's terrifying as hell, but overall the game is not really that scary, but cool as hell in VR.
I haven't played AC Nexus, but I've read that and other on Quest use 45>90 reprojection, which I imagine is a bit worse than 60>120. And people still seem to overall enjoy Nexus.
If you plan on playing RE8 & RE4 and some of the other good games/exclusives, I don't think there's anyway you'd regret it. Outside comfort or tracking issues both which can be solved for the most part if necessary. If you have no interest in most of the exclusives, then you may.