The Vankyo Leisure 510 & GooDee are two of the most popular budget projectors on Amazon.

They have excellent reviews, and for the price I can see why, but there are three fundamental flaws.
-Blurry Section of the Screen
-Only AVI format videos through Micro-SD, USB Drive
-3600 Lumens is a lie, I compare it to a Sony 3200 Lumen projector

Watch the video for more information.

Vankyo 510: https://amzn.to/2UNkvAM
GooDee 3600L: https://amzn.to/2SCQDd8