HX820 and HX723,EX723 are edge lit and digital versus has already said HX820,EX723 has mediocre viewing angles, clouding effect so these two are out of the game.Never knew HX720 existed in sony.
It is the HX920 and this is just the same hype game Sony is trying some websites to play for them as they did for XBR9.
They have not tested any of the 2011 HX range,they have thus far the most expensive 2011 Sony lcd they tested was the EX720.
Worldwide there are various versions like HX920/925/929 etc the HX723 means that it has a USB recording where as the HX720 lacks it.
If you see a Sony lcd box you will see EX72 or EX52 written in Big letter but not the last digit.
As far as the last comment ,you are free to assume what you want,no idea about the XBR9/Z550 stuff,but it was never the flagship tv in 2009 it was still positioned and priced well below the XBR8/X450.
They can use whatever chips they want but unless i see details on Sony tv's HD picture like i see on some other brands Sony imaging processors are just average for me.
They need to create blind test covering up the tv brands and just show the screens after all the tv's have been properly calibrated and kept in a dark room with zero reflection, then they should see which tv that most consumers&experts find to be the best in terms of picture quality.
Last year plasma's ruled and this year it is going to be no different. One thing for sure though LCD's will beat plasma in the sales department.
Yes they can use any processors available in the market samsung does it sony does or did it ,panasonic does it,philips does it .Its the algorithm that matters.
If you didn't see many details in the Sony image processing well thats you.But for the most part they are pretty good.
Last year plasma did rule in the 3d segment.
This year we hear Cnet saying thus far the best 3D peformance they say was in a samsung led-lcd and they also tested the GT30 plasma.
This year lcd panel have again been improved,if you look at the EX720 review in flatpanelsHD they measured a black level of 0.03cd/m2 for a edge led tv which is a big improvement compared to last years edge led-lcd and panels used in the EX720 are not the high end ones such used in the HX9xx series or other flagship tvs from samsung.
From the same site flatpanels using the same light meter and testing methods they tested the VT30 at 0.02cd/m2 (again thats cd/m2 NOT foot lambarts) which is still better then all the non-local dimming LED lcd they have tested,the difference is not much to VA based tvs.
But thats just shows you how far the lcd tech have improved.
Even in the off-axis performance , flatpanelsHD tested the 2010 52" HX900/909 which has a UV2A panel but Sony has made some mods to enhance the contrast shift at different viewing angles compared to sharp tvs and sony own lower end tvs which also used UV2A panel improved according to flatpanelshd.
Contrast, on the other hand, is maintained from angles and this is actually the most important aspect when it comes to viewing angles on LCD-TVs in my opinion. Most LCD-TVs have fairly good black levels from the front but black tends to grey out from angles. But not on Sony HX909/HX900.Black is pitch-black from angles, which is extremely positive.
So one can expect more improvements this year with advanced in lcd panels tech,coupled with advances in LED tech from all LED makers like CREE,SSC,OSRAM etc.
