MT,........... I like the Kodak, very nice....I have the Kodak HD Zi8, the brother to the one you show..just mine is not waterproof...great for beach and family vid's, plus it fits in your hand..only problem is I have 3 sets of batteries {rechargeable/good}, and a 16 gig card for it, and still can video only about 2 hours..but the picture is HD crystal clear. And it's great for concerts, low light ..I got a waterproof bag {aquapac} for it and it is suppose to allow underwater video, but it takes away from the quality...I sure like that one, the Kodak playsport...is on the list.
My other 2 vidcams are the Tachyon XC 2010, both can go under water, and take good video, but not HD..they mount to the side headphones, can record 16 Straight hours of video with the energizer ultimate lithiums {2} batteries at 5 dollars a two pak...so I just turn it on and detect, no on, off's..{only problem is you have to set down watch the full hunt to find the good finds in the video, so if you hunted for 8 hours, editing will take you awhile}.150 each for the camaras...one other thing, I can shoot it in 3d with both camara's...detecting in 3D? Not anytime soon....here is the tachyon quality video...family day.........Not bad, but not HD...
http://www.youtube.com/watch?v=SKUh1rkwZE4