firstly, you can get a 3d projector in your budget ( 40 k )
secondly alongwith the 3d option you can get WXGA resolution which gives great clarity.
now you can get these with the latest series of Egate projectors, specifically model no.s P512 & P442, these two are exceptionally good and are selling like hot cakes and well well within your budget.
I am the distributor of this company in Lucknow.
If you have any technical query or want to know further details of the product, please feel free to contact me on 09936232000.