Tryg, I'll be the first to admit that I haven't worked with a lot of high end digitals, but I have seen the Qualia and the Ruby.
The question I have for the digital guys is: Don't you find some of the sharpness adding an artificial content to the image. The crude analogy I tell my customers is that if you look out a window at a mountain with snow on it, say 10 miles away, you see evergreens that are green, and snow on the top of the mountain which of course is white. You can't see the individual trees from 10 miles away, yet with a digitally projected image, it might show such detail.
This is what CRTers always critique as the artificial sharpness of digital sets. Darin, you know that Wayne here locally switched from a tweaked out 9500LC to a Qualia, as he was looking for that sharpness factor. Personally I like the slightly softer image of a CRT, as it's more natural looking to me.
When I saw your Ruby in April I think, you had it tweaked out really well, but again, there was that somewhat artificial sharpness that's really appealing to a newbie ("holy crap, that's sharp!") as compared to their aging ES focusing 27" TV. I just find that artificial sharpness to be tiring (to my eyes anyways).
It will be interesting to see if I can see rainbows at this year's CES. That's the one reason I could never buy a single chip DLP, I got headaches at the TI booth within 10 minutes of entering it. Twice.
Darin, let me know when you get a Pearl..