The blacks on my w850a TV is as black as if the TV is turned off in dim light. So I don't understand where your seeing this set where the blacks that fail to match a plasma. I would say the set may not be adjusted correctly or maybe the angle your viewing from.
Seeing the TV here at home actually looks better than the pictures I took of the screen. I am used to watching a great picture and the deep blacks for last 2 years on the top rated (in 2011) 55" Panasonic VT30 up to a month ago. I'm saying this w850a LED set here in my home has the same deep blacks as this plasma I had been watching. I have been watching this new set for a weeks worth of DVD's, blu-rays and regular TV programming. The TV is that good. Buy one and see for yourself and If you don't like it, then return it. I'm sure you know not to expect a LED set to perform very well outside it's normal viewing angle to the screen.
Don't buy direct from Sony as they charge you about $130 for a return freight shipment. Amazon and maybe Best Buy returns the sets for free within a 30 day window. (return policy) That's if you don't like the set's picture or you have some problem and decide to return it for a refund.
The set I have was sold by Amazon's own LEA group so I would think you could get a 100% full refund if you make some complaint about the picture quality. Six months ago I returned a 2013 Samsung small screen TV that I didn't like the picture on. I bought a Sanyo to replace it and it has a much better picture. Amazon fully credited my account once they received the TV.
Where did these guys go that bought two TV's from Best Buy maybe 5 years ago and returned the set they didn't like. Another I remember another that bought two TV's from Amazon to compare the pix quality, kept the best pix one then returned the other TV. I forget if they were any restocking fees back then. Only in a dim lit room like at some TV stores can you really have a good look at the picture. You still never know, sometimes the default setting may have been messed with.
My thoughts you being a gamer you may like a 55" screen size better and you already know the w900a set has the picture you like and includes the triluminos display. The price may be lower now that I read Sony has stopped making them. The downside would be the LED view viewing area.
Have you considered a good 60" or 65" plasma TV. I would suggest the panasonic ZT60 other than it's heavy, runs rather warm and like all plasma's it has the fast 600 hz picture. Panasonic really lowered their prices due to some failed sets this last year. Panny will be dropping their plasma sets in April 2014. One thing about a plasma you have a great picture, maybe not as bright as a led but always includes the deep blacks. Walking from steep angles to the screen the picture will still look great. The ZT60 and the VT60 may have the same picture quality. See the Panny site to make sure. I think the new one has the # 3000 in it's description. I don't know the input lag but the new 60 series set should include a fast quad processor.
I would not buy a panny plasma set unless I bought the square-trade 5-year warranty from Amazon, if that's where you buy the TV. The rule with Square-Trade is if your set can't be reparied even to the end of the 5 year warranty, they will refund your full purchase price. They give you 30 days to decide after the TV has shipped.
Edited by WhiteSands - 10/20/13 at 6:32am