You should first make up your mind between Sony/SS/LG or Micromax/VU/TCL.
You can opt for brands like Panasonic or Sansui as well.
If you opting for Sony, then increase your budget by 2-3 thousand more and you can get 32" HDTV.
FHD Tv's of big brands usually costs much more. As
@Bapun Raz bro mentioned, Quality comes with a cost.
And also i would like to add that every inexpensive product isn't great.
But then, i would also like to share my experience. I purchased Sansui 32" HD TV from Reliance Digital.
When i went to purchase, i wanted to buy FHD TV only but when i saw the demo, i was very much impressed by the picture quality of HD Channels in HDTV and couldn't really find any difference in 32" segment across all brands.
I had went to store with budget of 30k and came home with Sansui in just 17k with
3 year warranty.