Alright, thanks to Adder, Gannu and others who posted all over TE and Internet. I finally bought a 32" Samsung D550, SQ02, (verified from service menu as well; it is S-PVA).
I am not going to review it as its everywhere. In case one has specific question; shoot a PM and I'll respond. I'll discuss panel available in shops and their rates while I searched.
So I live in South Bangalore, and searched following stores, Chroma, HyperCity, Reliance Digital, Girias, Pai
Now the important point is that they all have SQ01 or 02 on display.
In general they all are selling it for 33990.
Chroma and Hypercity giving 1000 Rs off and 5% Off respectively. Chroma also have additional 5% off on master card as well (chroma price 31341 Rs after both the offers).
Reliance and Girias offered no discount at all.
PAI was selling it for 31200 with toaster
, and this is where I bought it from. (they'll knock off 500 Rs for toaster).
Now when I bargained with PAI guy; the owner told me that the price has already hiked for them for about 300-500- Rs and they will be hiking it soon. And what I saw on online sites post my purchase; it has indeed happened.
LetsBuy: old 29200 -> New 30900
FlipKart: old 28999 -> New 31190
So I guess (I could be wrong as well; this is after all just a calculative guess
), weak rupee against $ has started to show its effect on electronics.
I noticed that D550 has a sticker on side which tells you about version number but D580 only has it at the back side; which makes it difficult to check in case the TV is wall mounted or packed. You can check D550 sticker even if it is packed, from the side vent on the box. (just remove the covering). when I auditioned D580 sound; it was definitely louder than D550 but I did not find it good over external speakers and hence decided for D550.
One more thing to add, Samsung does not have extended warranty; just 1 year (as being told by their customer care); Sony have 2 years extended warranty. So consider this while buying as well.