Here's from the specs:
"The HD HERO 960 features the same professional grade 960p, 720p and 480p (WVGA) video & 5MP timelapse photo modes, and incredible sound recording system as its big brother, the HD HERO camera.
Missing from the HD HERO 960 are 720p @ 60fps, 1080p video, and the HERO BUS expansion port in the rear of the camera that will let you take advantage of GoPro's forthcoming BacPac accessories - LCD screen & Battery Extension."
960 HD Video Resolution Modes:
* 960p = 1280x960 pixels (4:3), 30 fps, 12 Mbit/s data rate
* 720p = 1280x720 pixels (16:9), 30 fps, 8 Mbit/s data rate
* WVGA = 848x480 pixels (16:9), 60 fps, 8 Mbit/s data rate
-vs-
HD Hero Video Resolution Modes:
* 1080p = 1920x1080 pixels (16:9), 30 fps, 15 Mbit/s data rate
* 960p = 1280x960 pixels (4:3), 30 fps, 12 Mbit/s data rate
* 720p = 1280x720 pixels (16:9), 60 fps, 15 Mbit/s data rate
* 720p = 1280x720 pixels (16:9), 30 fps, 8 Mbit/s data rate
* WVGA = 848x480 pixels (16:9), 60 fps, 8 Mbit/s data rate
..and 960 is about ~ $100 cheaper than the HD...
www.seabreeze.com.au/Shop/Scripts/prodView.asp?idproduct=53