@Dinesh, one thing you should never do is buy something worth 100k in a snap deal. You must do a thorough research. When I purchased my projector in 2005, I was just looking at various websites, going thru reviews, specs, technology aspects for a whole two months. In fact the deep obsession took some of my office time also. But two months later I was the proud owner of the top rated projector at that time.
Seven years later, the projector is still giving me good service. It is not 1080p but it does not bother me that much - at least yet.
Second thing is budget. While it is prudent not to go haywire with the financial provisions, a projector is not something that you are going to buy every two years. So think about the best what you can buy within your limits. At the moment, it seems that you are putting the cart before the bullocks. 1 Lac is a decent budget but if by flexing another 10k, you get a much better product then that should be considered.
While lens shift is a very important feature, it is usually not required if the projector is permanently installed, e.g., ceiling mounted. You can go thru my article:
Home Theatre Blues - Part 6 (b): Choosing the Projector and also this one:
Top 10 Home Theater Projectors