I am using Lite-On LH-20A1P. The price is ~1600 in Nehru Place, Delhi.
Some people here in the forum had a problem that the model did not read the dual layer DVDs. But updating firmware was the solution and after that the model did quite well. But I must say I never had any such problem, my burner is going strong even after 1.5 months and it can read dual layer without any problem. I have already burned around 50 DVDs using it, never had any burn error.
I would give a green signal is you were to buy this model.