At last I ordered C630.My search started from c530,c430 and C10,s10 then ended in c630,v20.
Even though C430 has good review in forum I didn't find it very good.c530 was good but side by side comparison with c630.C630 was ahead in black.(I donno how it happened even thgh contrast is not very much different).V20 was good.But I have to wall mount it to veener wall and heat generation was a concern and also power consumption concerns since I have run it in a inverter some time (almost 50W difference on ave).
I am satisfied with black levels of c630/sd.For movies you might feel some artificial enhancement to the pic but I would like to say "I want to love it".
More on this when I get it tommorow.Due to my search I missed world cup finals by a day.
To others who are searching for plasma/LCD Modern world(Domlur,Bangalore) is excellent place to compare TV.They also have arrangement to show different input like DVD/SD/BD etc.They have a beautiful arrangement and sales ppl are good.Most of the other place like croma and ezone sucks in this.May be they will give good quote.They are not able to match the quote I got becoz I got it through a friend in samsung with employee discount.
Thanks to all forum members who helped me and poured in their unbeatable knowledge.I think forums really change the way consumers shops,10 years back sales man can sell any thing to you.