Advice to decide a affordable Projector

[Thunderbird8k]

Hello Friends,

I am not a pro like most of you guys, so i need your advice to purchase my first projector. Firstly Dad has agreed to invest max 45k for this new toy. I won't be using it regularly. Only weekend movie or sometime after a week or two. I will be using mainly with PS3 to watch movies. Because of tight budget, i am having trouble to decide a decent project to fulfil my desire of having one. Fellow respected member, very good friend of mine crossbow explained and suggested to go for projector with DLP, optoma and above all go for a new one. So today i was checking various websites to learn (still learning) what is LCD, DLP, Lumens and all. I have shortlisted these two from Amazon:

-Hitachi CP-WX3041WN Projector
-Optoma X341 3300 Lumens XGA 3D DLP Projector with Superior Lamp Life and HDMI

-Optoma W331 3200 Lumen WXGA Widescreen 3D DLP Projector

Room Size is : 12'x20'

I have skipped some brands like Play projectors etc. And i don't have any source to import one from abroad.
I need your suggestion which model do you guys suggest in this price range, pro, cons and less lamp replacement cost. Many thanks guys for your valuable in suggestions