Yes it is. It's fine during low lighting situations (after 6pm). Daylight watching seems dimmer.

Fullscreen whites should never look grey. I believe it is some setting that you have not optimized. Fullscreen white will not be as bright as a LCD due to the nature of plasmas APL but it shd never look grey.

I would say dim. Somehow i suspect it's dynamic contrast. Here's how i test. I use PC HDMI as source so i can control.
> 1st test picture, 100% white. Screen dims, whites becomes greyish.
> 2nd test picture, 50% white, 50%. The whites becomes whiter.
> 3rd test picture, 10% white, 90% mix color. perfect whites.

No changes in TV settings. Just different type of picture. Even easier to see the effect of dimming when i drag a white window around the screen. When it fills up 100% of the screen, the white becomes grey. Can see the dynamic contrast ratio (or dimming) adjusting itself.

I have turn off all enhancements. May try to put on Game mode and let you guys know the result.
Hope it does!
No complains on fast moving pictures at all. No ghosting whatsoever. Again, easiest to test by dragging window. However, horizontal bleeding seems to be a major problem. Eg, scrolling text / credits will exhibit image bleeding. That annoying as well.
The disappointments i have with this set is below:
- Scrolling bleed
- Buzzing
- Astro PQ
- 100Hz only works for 50Hz input. It will not optimize HTPC movies channeled via HDMI. The signal must be in 50Hz or 1080p/24Hz to take advantage of the cinema smooth function.

The likes i have:
- DLNA (even plays MKVs)
- Price / size ratio
- Color accuracy and black levels
- Thin (surprising for a plasma)

However, i don't think i can get a 50' LCD within the same price range with the blacks and color accuracy