I just received my 5th replacement.
1st one was a May unit - looked used, had scratches and scuffs on it and a scuff mark on the lens. Major chromatic aberration, major flicker
2nd one was an April unit - Major CA, flicker, and I forget what else. At this point I thought the CA was something they'd fix, so I RMA'd it, if I'd known it wouldn't get better I'd have kept this one.
3rd unit was a real POS, May unit - looked used, there was something large clunking inside when I'd flip it over, 3inch+ light border, seemed more like 2k than 4k, CA, and the throw was completely off to where I had to have the vertical shift all the way adjusted and it still was inches off from the others.
4th unit was a July unit - It was okay, other than the major major CA and the fact that it completely died and wouldn't turn back on nor were the leds lit, indicating power. It also was blurrier than the others, especially on the corners.
This 5th unit is an August unit, rev 04-103 and the best so far out of all of them. I tested only very shortly, but the colors are good, it's nice and sharp, there's no issue with blurriness, 4k is back, the throw seems normal, no light border, relatively quiet. The only real issue is the ever present CA. The focus wheel is touchy. When I adjust focus it bounces the lens / image around, as if it's loose. Whatever, I'll adjust and leave it alone, I can live with that. So, hopefully this one doesn't die on me, because I'd really like to keep it.
So, there it is. If this one doesn't die like the last one then my frustrations are over.