Originally Posted by WALD0PiA
Well I am not looking for a perfect home theater projector. Just for a portable one, something that is okay on 120" black screen.
Do you know what a black screen is?
Do you know what 80 lumens means?
Do you understand that you are talking to people with decades of projector experience?
Do you understand the definition of 'crap'?
Please, this isn't meant to be insulting, but perhaps a bit sarcastic.
What we need are details of what you are trying to achieve, because it sounds like you are working your way through alibaba, and not stopping first to ask questions about what you should expect to spend budget-wise, and to setup a set of goals which are achievable. Many websites prey on those who are uninformed, and if you just provide us with the details of what you are hoping to get to, then there are people here who are more than happy to give you exactly the information you need.
Acceptable projectors can be had for a few hundred dollars which can deliver a very acceptable and bright image at 120" diagonal.
HD 1080p projectors start at around $500 with some very solid options out there under $1,000.
With a goal of 120" diagonal, which is about 43 square feet, and a THX recomendation of 15 lumens per square foot in a completely dark space, that's about 650 lumens as a minimum brightness, after calibration, projector requirement. So, as a starting point, you need an advertised brightness of no less than about 1,000 lumens. What you asked about is 80 advertised lumens. Which is enough for about 40" diagonal in a completely dark room.