Sony Qualia 004 projector-How well does it work?

I am conserned about motion artifacts with this projector. Someone mentioned this in a related thread I sponsored, but no one commented further. Can anyone describ their experiences. I prefer not to add to the expense of this projector if I can help it.
Thanks,

I visited with a Sony representative today. I questioned if this unit was possed for an upgrade soon. The rep said that she heard sony was going to go to the 1080p chip set this fall. I told her what my interest was and time table and she agreed to find out specificaly when this unit would be ready for sale. She called back after attending a sales meeting and said she had been mistaken that there were no immediate plans to show-case this new unit. I guess we may find out this September at the Indiana CEDIA show. Has anyone heard differant? Of course this sony representative said there was no need to add a processing unit.

Cinematic_systems how much is the Immersive Technology Simmetry processing unit?

A single chip option vs the 3-chip Qualia. Is there any single chip HD front projector out their worth looking at in place of the higher cost Qualia 004?