i will suggest that one which i have used, and currently using. micromax A57. ninja smartfone. it is a nice android device in 4500 inr only. just it has less battery backup. but nice processor 1Ghz. camera also praiseworthy.
To be fair you wont get good ones from Sony or Htc as they dont make good phones in that price. Lumia good ones start from 520 which costs 10k.
So the ones left are micromax and samsung, both which I dont prefer, if you ask me to choose one, I will say get Samsung.
M using Samsung galaxy ace duos. Its too good to used, this is best android. Nokia lumia 800 kept aside. Not that i boast but i recommend Samsung. Bought last month at the rate of 9500