There should be some reliability concern with electric motors on cheap screens. Likewise, there is the question of why you are spending more to have that convenience factor with zero (and I mean zero) improvement to the quality of the screen.
Within 1-2 years all non-tensioned screens (manual and electric) will develop waves across the material. This causes visible distortion to the image on screen. I just think it makes much more sense to get a manual screen... a cheap one! Then save up and if you must have an electric screen, get a tab-tensioned electric screen. Those will go for years, even decades, and provide a nice flat projection image.
Always best is a fixed frame screen if you can work it in your space.