Never go for Sony. You may get lured by the SPVA panel which they offer as agasint the panel lottery system which samsung adopts (that too not sure about the current situation for both the brands).
After 2-3 years you will start getting colour banding issue which is famous among Sony sets. In 2009, i had a 32" sony TV bought from Singapore and after 2 years , the banding issue started. When called Sony rogues, they just said the PANEL has to be replaced which will cost more than 10k (dont remember their quote) and 30 days warranty will be provided.
I was under the impression that it is my bad luck , a Sony TV going kaput so soon. Subsequently a couple of years back i bought 2 CX52 40" LCDs with the new X-reality picture engine one for myself and the other for my uncle. I chose SONY because i read about the panel lottery system of Sammy (they just randomly chose TVs and install SPVA panels or SMVA panels) . So one cannot judge whether the TV which they buy has a SMVA or SPVA panel before buying . On the other hand SONY TVs superior lineups have a sure shot SPVA panel.
I was lured and was very happy that i didnt go for Samsung and bought Sony. True, that the picture quality was amazing but the life span of the panel is very short. I paid 43k for my TV and after a couple of months bought it for my uncle for 38k. The Sammy had good video format capabilities, but i chose SONY though i knew it is crap when it comes to video format support the reason is i can go for a Media player.
Just a couple of days back it was very sad to hear from my uncle that the TV developed banding and they were very disappointed. Only then i realised and googled to find that there are a lot of Sony ones suffering from this kind of issue. My cousins have Sammy LCDs and they were working flawlessly even now. I havent contacted Sony to ask what can be done for this issue yet, as i am pretty well sure that they will suggest a panel replacement and commit daylight robbery if i agree with it.
So my sincere advise is NEVER GO FOR SONY !!!!