for me it isn't the color accuracy that bugs me. it's the dramatic rise in black levels.
i find that a dimmer picture, given my eyes time to adjust to it a bit, is more 'contrasty' and has a better black level than a super bright image.
with the jvc, i don't see much change with high/low bulb. and the iris open/closed, while dramatic at first, seems to yield similar experiences once my eyes have adjusted. in some cases, the bright image actually makes my room appear darker since my iris's open up so much.
Displays: Samsung PN64F8500/JVC X35
AVR: Pioneer VSX-1130K, 7.1/5.1.2 audio
Sources: HTPC(Enby), PS3, XBOX360, Wii
Control: Harmony One