I had one and it was OK. Leaked when I first got it and had to fix that and the cable connectors for the video(RCA) would break if it was too cold. I might still have it in the garage, now that I think of it. Video quality was not bad, but not as good as the Marcum. The unit was run off an old laptop and I have some video to show the quality.
https://youtu.be/JRj9_8hg2Rc