HD video ideas/recommendations

[C2 RIBS]

I currently have a GO Pro system that is not the 1080 HD version but this has developed a screen fault so I cannot tell what setting it is on.
I also use a drift unit- Drift X170

Not knowing enough about these units, should I go for the upgraded version of Go Pro
GoPro HD Camera Naked

or
maybe another unit, bullet cam etc etc.
I want it to again mount on A Frames, consul frame to capture moving images of clients out with us for later downloads. Needs to be fairly straight forward to work and I would like to record a period over two hours, so battery and card issues.
Any ideas- suggestions?

[astra]

Go pro hd all the way 32g card superb,i love it!!!!!!!!!!!!!