Even if you just want to shoot HD video, I think the GH4 is an excellent choice, the quality of the HD video is amazing, and I think the camera and housing are priced well for a serious videographer, or for someone who wants to shoot video and stills. Just my two cents
Scott Gietler
www.bluewaterphotostore.com
www.uwphotographyguide.com
I agree - the GH4 has produced the best HD video I've ever been able to produce (and of course I have 4k/UHD source footage and I'm able to create a 4k master for future use). Here's some of the footage I've shot over the past couple of months with this camera and the Nauticam housing: https://vimeo.com/album/3092917