I have heard that the Series 4 had 8 bit capability (256 shades), where as the Series 5 has 10 bit (1024 shades). Does this mean that the series 5 will offer improvement on the following phenominon: Since I first saw the Panasonic/Toshiba Plasma, I was disppointed with the 'patches' of shimmering colour which is often seen in backgrounds. I went to my local Panasonic centre at lunch time and first watched a bit of Jurrasic Park 3. All the way through the film, in the backgrounds, there were the large patches of shimmering that I saw before. I then changed to 'Monsters Inc', and again, on some backgrounds there was the same effect. I then tried my 'Avia Setup Disk'.. I wanted to see if any of the colour spreads would show this problem. When I got to the screen with different stripes of grey, all of the shades were different. However, some of them 'shimmered' This was especially noticable if you scanned your eye quickly from left to right.. You could also see it worse out of the corner of your eye. I have a feeling that the Plamsa is quickly swapping between 2 different colours to generate the single colour. I then moved onto the section of Avia which generates screens of solid colour. When I got to the blue frame, the effect was obvious. Whilst the blue screen was a lovely deep blue.. When you flicked your eye over the screen, you could see that it flickered and I am sure that one colour was green. I am hoping that this is because the display is only 8bit and therefore it can't generate enough colours. Do you think thats its possible that W5 10bit capability will improve this phenominon?