Let the hive mind of Engadget get that for you.
"I need help! I want a small pocket camcorder but I'm not sure which one to get. I don't want to fall into the hype of the Flip because I worry two hours won't be enough. What should I be looking for when considering a small camcorder and where can I get a good quality one with expandable memory? Thanks!"
Most people like to had physical copy of the movie.
3 Main factor.
You could find them onsales after been release for some time.
You could show off your collection much easily.
You could sell them might still be a little but better than digital that can't resell.