Wish To Buy A Projector But Need Help Please

[sut]

hi

i hope someone here can help i am tryin to buy a projector but am really new to all this i have worked out that coz of ambient light in my house i am prob looking for 1 around 200o lumens and a contrast ratio of 200.1.

reason for this is that i have children so in the day i do need to have light in the house and the high contrast for the fact that as i understand it the higher the contrast the better the picture ( please correct if wronge ) i am also lookin for a xga display again as i am told its a better picture to svga ( feel for to correct if wronge )

so main question is i have £500 max to spend can u help by suggesting some projectors that will meet the needs i have

thx for any help
sut