The PlaySport Zx5 is Kodak's update to 2010's PlaySport Zx3. The two look nearly identical, but the Zx5 ups the ante on durability. The Zx3 was merely waterproof and dustproof but now the Zx5 adds shockproofing. There are a couple of other feature differences, too, most for the better. Unfortunately, the battery is no longer removable.
The video quality from the Zx5 doesn't change much from the Zx3, but the few changes are mildly for the worse, which brought its rating down. On the other hand, the video is still very nice and the camera is a good deal for anyone looking for a minicamcorder that can handle surf, sand, snow, and rain.