having an HD6KM here for testing and showing client, the comparison with the Lumis is interesting (LUMIS wins on contrast, on off and ansi).
the HD6KM has to be installed in a sealed booth (ventilation) and needs improvement in contrast, especially on off. the gap with the Lumis is large...(lumis black bars are magnificient).
The LUMIS gives you a giant plasma /TV tube contrast/black level. Lumens depend on movie format and screen size.You "feel" the power of the Christie, it sails on big screens.
but not on black level , "inkiness". I much prefer 2000lumens with 20.000:1 on off and excellent ansi vs 4000lumens with 2500:1 and very good ansi.
the Christie however we tested had excellent convergence (both chips and lens).
colorimetry was quite nice too. the nrs of settings, memories, controls is ENORMOUS.
it feels solid, excellent remote too.
looks and features, IF it had the on off ot the Lumis and it's ansi too, would make it a killing machine. But I'm of the school of deep deep blacklevels and contrast ratio (something you never have in theaters btw).
Giant punchy but with massive contrast ratio image is something to praise and look for.
and those prices (35-55,000) it has to come with great lens and chips convergences too.
(unique very impressive sets of test screens witht the Christie btw).