CP, Card camera or DV?

Here is a simple question, for different application and needs, which feeds family's video needs?

For iPhone, tech specs:

Video formats supported: H.264 video, up to 1.5 Mbps, 640 by 480 pixels, 30 frames per second

http://www.apple.com/iphone/specs.html

For casio card Z300BK, tech specs:

1280 x 720 (HD, 24 fps), 640 x 480 (STD, 30 fps), 320 x 240 (LP, 15 fps)

For DV Sony SR65, tech specs:

• Video Actual : 690K Pixels (4:3), 670K Pixels (16:9)
• Video Resolution : 720 x 480, no fps mentioned, price is only 340 USD...
• http://www.sonystyle.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&langId=-1&productId=8198552921665291532