Look like JVC likes the HDD...

specs here
http://www.engadget.com/2008/01/06/jvc-busts-out-five-new-hdd-based-everio-g-series-camcorders/

pics here

http://www.camcorderinfo.com/content/JVC-Launches-Five-New-Standard-Definition-Everio-HDD-Camcorders-33987.htm