A few images for your consideration. After setting up the screen late afternoon, I dragged out the BenQ HT1075 home entertainment projector that I'm currently reviewing, set it on a table, plugged it into an outside outlet, and plugged in my Roku stick into its MHL port (HDMI2). As you can see in the last of these images, it was still pretty bright outside, and the image (off angle) is rather washed out. The other images, by comparison were taken right after sunset, so the sky in the west (you can't see it) was still post sunset bright, and the 2200 lumen projector produced an extremely bright image.
The screen does seem to have a slight color shift to blue. That's not anything I would think people would care about for a summer movie night in the backyard, but worth noting. I noted that in the football image. Still, the color on the image from 30 Rock looks pretty good.
Perhaps its because I've set up more than a few screens in my lifetime - for rental and staging events, etc., but I liked the overall concept of the ProjectoScreen 120HD.
It's particularly nice that the whole thing, when not set up fits into a carry case that's just 40 inches long, and easy to carry. Unlike many fixed screens for the home or business, all four sides of the frame are folded and in one piece making the setup literally "a snap".
You can't argue with the size of the image: A 120" diagonal 16:9 screen is pretty big, definitely suitable for a family and friends outdoor event, or for that matter, a wedding presentation, or a business meeting. Not big enough, there's that 144" diagonal version for only $50 more, but it is larger in its carry case, and heavier.
For a quick setup and tear down, for a one night movie event, if you are setting up the screen over a lawn, the four stakes that go through the feet should be enough, if there's no significant breeze. However, if you there is, or you are setting up on a hard surface, such as a driveway, then use the nylon cord and use outboard stakes to keep the screen in place. You could even use all eight stakes with the nylon cord (you would need more cord), since you wouldn't be able to use the wholes in the feet.
I might suggest some hardware store clamps for the "other end" when using the nylon cord. It might simplify, such as clamping to a gutter, or a fence, or whatever else you have to anchor the screen to.
My only concern about outdoor use, is that while the screen frame itself is a nice, lightweight aluminum, the fasteners on the hinges etc. seem to be steel. After two nights out, one of them rather humid (some light fog we call "marine layer" out here in So. California), the screen frame was wet in the morning, and you could see some liquid rust around those fasteners. I took this picture before that, but the arrows show where that rusting would appear.
All you really need to do is dry off the frame before shoving it back in its carry bag, and you should be fine. That said, the folks that sell the screen - at Visual Apex, said you could spray with Boeshield T-9, and Rust Free - one removes rust, the other prevents), or some other anti rust spray.
Although I reviewed this screen primarily as a portable, outdoor screen for your "backyard" parties, understand that it is perfectly viable as a portable indoor screen. Oh, I favor those pull up type screens for real portability and assembly in 60 seconds, those "Insta-theater" type screens cost at least twice as much, and tend to only go up to 100" diagonal. Since they are essentially 1 piece screens, even a 100" might not be able to fit in a car. Here's a solution that's big, and reasonably easy to set up for serious use. This screen would work fine in a large conference room or hotel ballroom, as would the 144" version. And the price is right. One thing to note though, when using its feet, it's fairly tall. I didn't measure (too late now), but it's approaching 8 feet in height. So, beware of low ceilings!
All considered, the ProjectoScreen 120HD looks to be a very practical, and affordable screen for both fun and serious use, and the price is going to be very hard to beat!