After spending some time with my 70, I am overall very happy with the PQ, compared with the 65 I returned in exchange. There is VERY minimal Dirty Screen Effect, very limited blooming, and NO BANDING (which imo accounts for most of the DSE). I got my v1.08 FW upgrade after about 10 days, and am using mostly Game Mode for picture calibration.
I must admit I am constantly fiddling with the picture settings, trying to dial in one I can just leave alone, but I am coming to the realization that may never happen, because there is so much variation in PQ even within a single source (like cable). I have at least gotten to a pretty happy color/contrast setting that I like (although I am still tweaking the color gains and offsets to try to eliminate color push)- but I keep playing with the Auto Black and Smooth Motion levels, depending on the type of programming I am viewing. I personally have no use for Auto Brightness and Smart Dimming. I have to say that now that the DSE issues are gone, sports look phenomenal on this set!
I will post some pictures later, but I wonder if anyone else is seeing this phenomenon- when changing inputs, the menu overlays first appear completely washed-out, with no contrast, and sort of "fade in" (for lack of a better description) to the proper contrast. This also happens when I first access the cable program guide. The whole process takes only a few seconds, and I have not noticed this effect while watching anything- like going from a dark to a light scene. If I do see that, then I will worry that something is perhaps wrong with the signal processor in the TV, but if it confines itself to menu overlays, I am not too worried. Anyone else notice this effect?