I’ve got a Ghost…seems to be ok, but my setup is all wrong so I’ve yet to get any footage that is usable.
I got upgraded from 2 Drift HD cameras so I’ve got a load of mounts and spare battery for the Drift HD…the Ghost seems a better bit of kit but I think the interface is more polished. Dead easy to use and the Android app allows easy amends to settings (although it is still in beta and it looks like if you put the phone in sleep mode, it stops recording!
The onscreen monitor is very useful (no use for helmet mount for you though, someone else would need to look at it or you use the iphone/android app). thenunit is waterproof but the remote isn’t…but the remote does some fancy stuff tht I’m still to work out.
Battery seems much better than the Drift HD (but it is a higher capacity unit.
I still think it is a better buy than the GoPro, mainly because the unit has a screen on it without needing anything extra.
I’ve got a couple of Vimeo videos of the Drift HD – the Ghost is a similar quality footage.
https://vimeo.com/61666939
https://vimeo.com/66684013