I'm subscribed to the M150 thread, I think. I'm subscribed to one of them anyway. I don't remember any reviews that didn't dog it for beign too loud, and that was always answered with a firmware update corrected it, but I don't remember any post new firmware reviews.
Anyway, I'm sure I'd like it in general, I'm a LED fan. But I doubt I'd find it a hands down replacement for where the smaller 3C DLP's fit. Thing is, we aren't comparing apples and apples. A 4500/2500 lumen 3 chip (particularly in 3D mode) isn't the same as a 1100 lumen LED (I'm still VERY skeptical on that number), regardless of the chip size. Yes, the LED may look outstanding on a smaller screen, and I think they do. But the people looking at a High Lite Cine 330 3D aren't going to make it with a 1100? Lumen LED.
Anyway, DPI has a new LED also rated at 1100 lumens so that leads me to think it's got the same light engine as Sim2. They said they'd send me a sample piece and I'm looking forward to seeing it. It's a PD chassis AFAICT, looks like the dVision line. I've tried to get my Sim2 rep to send me a M150 to see but haven't gotten anywhere with him. The 150 at CEDIA wasn't particularly impressive as have been discussed elsewhere, but they didn't make much effort to show it well IMO.