I recently bought a VIO POV HD and am quite happy with it! Has a couple of useful mounts, a wide angle, up to 1080p and is quite handy! Battery life is 3-4hrs which is probably not bad for a flight cam but still a bit annoying for me..,
Rolling shutter effect:
The solution to this is a neutral density filter! It forces the shutter to slow down which blurs the prop and makes it look like it should!
I'm using a 1.8 ND filter fixed to the lens which almost completely eliminates the shutter effect. I guess if I find a 2.0 one day it will be perfect...
see here:
Cheers
maehhh