I wanted to add my review/opinion on the HX909 by Sony.
A little background is needed before I start. I own a Pioneer Elite Pro 111 and a Pioneer Elite ( 768p model, 8G). I will be comparing the 52HX909 to these tv's.
I was able to sit down and demo the 52HX909 for a decent amount of time with a Sony PS3. I played Gran Turismo 5 on it and used settings that are available in the settings thread for this tv on the forum.
First things first.... as much as I love the Pioneer tv's... something I always had a problem with them for gaming ( movies not so much an issue) is the PWM noise and screen uniformity. This is way more noticable with games then movies. So playing on the Sony was a real treat as there is obviously no PWM noise. Another issue with the Pioneer plasma's is screen uniformity. Again movies it's not noticable but with games that use at times bright solid colors you can see uneveness on the Pioneer Panel. I personally can't stand this about the Pioneers( I also see this on other plasma sets). Again the Sony did not show this flaw.
So far so good! Now playing with GT5 which is a 60fps game you can easily see if a tv can handle fast motion. With the Sony set to clear 1 I was amazed! I never saw an lcd or any tv other then crt handle motion this well! I was really impressed! The Pioneers have phosphor lag which shows light yellow streaks behind objects. So going to the Sony there was none of that! It really handles motion like none other I have seen, this is no lie.
As for the color on the set, I used the settings provided on this forum and I would say they were very good. The contrast was incredible, there was a decent amount of light hitting the screen and it was able to maintain that black look whereas my Pioneers get washed out with excessive light on them. This made a noticable difference to me vs the Pioneers. I couldn't use the Sony in complete darkness so I cant comment on absolute blacks but I can't imagine them being worse then the two Pioneers I have.
I know input lag is a taboo phrase in this thread and I will keep this short. From playing GT5 I didn't notice any more lag then the Pioneers. It felt around 2-3 frames, or the same as the Pioneer ones. If your a gamer this really is the tv to get in my opinion. For movies some MAY prefer the more crt look of the plasma and I would understand that.
The bottom line is Sony really made a fantastic tv. I personally am VERY picky about tv's and I have been down on lcd's for years since owning the Pioneer plasmas. After playing with the HX909 I can safely say they had made a tv that has alot of the benefits of plasma( excellent contrast, better then plasma motion handling, great color calibrated) without the some of the negatives of plasma( Image retention, phosphor lag/blur,pwm noise, not bright full screen white, uneven screen uniformity).
Consider this critic en-lighted after playing with the HX909