Overall Color & Picture Quality
Stunning comes to mind, as a good descriptor. Overall, our calibrated Cinema 2 (essentially the same as THX, but with our calibrated CMS settings not theirs), looks great. Skin tones are excellent, looking better side by side, than the Epson UB projector and also better than the Panasonic PT-AE4000 (although in fairness, we haven't calibrated that one yet).
Overall there's very little difference between the JVC DLA-RS25, and the older DLA-RS20. I'm not sure how much of the slightly greater "pop" the RS25 has, is due to the older lamp in my RS20, or how much is due to the slightly improved, and truly unmatchec black levels. Ultimately, though, the RS25 does look, overall, both extremely similar, and slightly better, than the RS20. Not a great difference, but at this level, any real improvement is always appreciated, in the quest for perfection.
Darker and very dark scenes, of course are a real strength of this JVC RS25. With its advantage over all other projectors, in terms of blacker blacks, and the fact that unlike almost all other projectors, which rely on a dynamic iris for excellent blacks, the JVC does not. That means darker images are not being compressed. With dynamic iris designed projectors, for an iris to close down, those small bright areas also have to be dimmed or the iris can't close down at all.