Decent Projector for Occasional Use (Indoors and Outdoors)

How important is daytime (or even dusk) viewing to you? If at all, that is your primary constraint... it will dictate not just how bright your projector needs to be, but, more importantly, will require rear projection. Even then, the screen will need to be shaded (i.e. no direct sunlight hitting the screen). I seriously doubt you can do even reasonable daytime viewing with that budget, so my advice would be to give up on that dream until your budget increases dramatically.

What is your source (is it HD)? What screen size are you hoping for? Do you already have a screen? If not, what is your budget for your screen? Do you already have a sound system/speakers or will the PJ require onboard speakers? Are you willing to buy used or refurbished? Are you sensitive to DLP rainbow effect? I know, more Q's than A's, but I think you'd be happier with the answers you get if everyone had more info about your needs.