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!"
Anything filmed on a Red One is 4k unless they film at 113 FPS at which point it goes to 2k because of the massive data rate associated with Redcode raw at such a high resolution and speed.