Black and white in the same scene. David because of the immense processing power 120hz adds Optoma pratically did away and any dithering noise. The picture is extremely smooth and noise free, blacks look better because they're noise free. As far as rainbows I could see a few when it was brand new and so bright, can't see much anymore.
I had the RS2 great contrast, didn't like the colors very much you'll love the colors ot the HD33/HD3300. Again the processing added to the colors being so good. I'd say take a look at it, hang on the the JVC and decide. There's already a Panny AE4000 owner that says he could live with the HD33 image over his Panny.