After reading the reviews, I got the sense that the Sony is the most full featured, the Kodak takes still photos, is waterproof and outdoors-friendly, and the Flip is the easiest to use.
When competition heated up in the photo developing market, Kodak advertised to consumers that they should be sure their priceless pictures were developed on nothing less than KODAK paper, convincing KODAK disciples to look for its name to insure that the prints of their photos would keep it all in the KODAK family.
Additionally, you can capture VGA movies at 10fps or QVGA clips at 20fps, and Kodak's Perfect Touch technology supposedly clears up your photos without a lot of effort on your part.