If it's really 6x speed wheel, there won't be rainbows to most people if you are watching it at a normal brightness. The problem is people watch it at 20+ fL and say they see rainbows, well that is not a good test. You need an ND filter to get the RBE down. I still have my doubts that a projector at this price has a 6-speed color wheel, but anything is possible I suppose. There have been many misleading posts by reviewers about color wheel speeds later to find out it wasn't really 6x. If it is 6x speed, it certainly should produce much less rainbows than the Mits hc3800/hc4000.
Also, if it is anything like the w7000, then the color wheel will only be 6x-speed in dynamic mode, so perhaps try dynamic mode and see if it has fewer rainbows.
I found this UK spec. sheet which states 6x color wheel. It might be similar to the W7000 which is only 6x in Dynamic mode.
This not NOT a 6x DLP projector neither is the W7000. The w1070 is a 6 segment color wheel with speed at 3x and the W7000 is a 6 segment color wheel with 2-3x speed. The reason sellers claim 6x is the 6 segment color wheel claiming a dual factor but unfortunately it does't work like that. For eg in the hidden menu of the W7000 you can find color wheel speeds for some modes as 2X or 3x for dynamic(which by the way is completely not watchable as the color is completely off).).
If any owners of the W1070 that have owned or seen the RBE on W7000 can comment on the RBE it would be very helpful as people will be able to compare.
Edited by elgriego - 12/16/12 at 12:31pm