The W7000 should easily do better than your marantz in terms of black levels. The 4001 is a 5 year old DLP projector with a dynamic iris. (I never reviewed any version). However back then, none of the DLPs with irises were any match for today’s ultra-high contrast projectors. The Marantz spec, of 6500:1 is likely conservative, but still, I would think you’ll not only get a dramatic improvement in black levels, but you are also going from a 720p projector to a 1080p one.
Good luck, you should love the change, and more brightness as well – art

A short review (I’m watching the 6010 right now), will likely be posted tonight – tomorrow latest. I’ve finished it, and sent it to Lisa, to do some reformatting. -art

I am seriously considering the Epson 6010, but I can’t find any recent reviews based on a postproduction model.

Have you had a chance to review the postproduction model yet, and if not, do you know of any rigorous reviews that have been done.

I am not looking for a cut and paste type from the Epson web page.

Lastly is the advertized 480 refresh rate a true physical 480 hz refresh rate or is the refresh rate emulated, like 240 hz performing like 960 as some LED TV’s are now advertizing? I am seeing reference to both actual refresh rate and artificially enhanced in various sources and am confused.

Thanks, Carmine