Wow. I'm not even sure how to fully describe the experience. It's so night and day different from the OG Rift it's kind of indescribable. Like trying to explain HDR to someone who only has an SDR screen, or HD to someone who's only had a CRT. I turned super sampling completely off because I wanted to start from a performane base, and it's incredible. Clear, smooth, I can read signs ahead of me. Dashboard text is incredibly clear, no more blurry small text. I'm not even sure I need super sampling on at this point, I'd rather turn more eye candy on in iRacing. The screen door effect is not gone, but you have to actively be looking for it to see it. In iRacing during the day I'm not noticing the color gamut issues caused by swapping an OLED screen to an LCD one. I'm sure at night things will be a bit more washed out grey but we'll see.
The image at the very, very edge of my periphery is more blurry than I'd like...but I've done very little adjustment yet. I still need to get the IPD correct and figure out exactly where the lens distance is comfortable with my glasses.
I'll write a more complete review covering packaging and everything at some point.